Chinese Scooter Carb Main Jet upgrade
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- เผยแพร่เมื่อ 24 ก.ค. 2024
- Carburetor Main Jets kit amzn.to/3bECZeE
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The process for changing the main jet size is pretty simple. First remove the carburetor. To do this you'll probably need to take some parts off the scooter, such as the underseat storage container and possibly some body panels. Every scooter will be different. Disconnect the fuel line and vacuum lines, disconnect the auto enricher (choke), disconnect the throttle cable, disconnect the air intake hose and disconnect the inlet manifold. At this point you should, be able to wiggle the carburetor out of the scooter.
At the bottom of most carburetors you'll find the float chamber, usually secured to the carburetor body by four screws. Remove these screws and the float chamber should separate from the body. If you haven't drained it, it will be full of gas, so be careful.
Scooter Carburetor Main Jet
On most carburetors, the main jet is the one which sticks out more. The jet itself is actually just the top part of the brass tube which sticks up out of the aluminum carburetor body . The lower part is the atomizer and it can stay in the carburetor body. Only the main jet need to be changed. Be sure to use the right sized screwdriver to remove it. Brass is quite soft and you don't want to damage the screw slot. So unscrew the main jet and replace it with the new one. Screw it in tight, but you don't need to use a lot of force. Just make sure it's not loose. That's it. You've now replaced the main jet in your carburetor!
Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't, your engine may sieze on you.
This video is perfect for chinese scooter like gy6, lance, taotao and more - แนวปฏิบัติและการใช้ชีวิต
Good day bro, UPDATE: So I took the 145 main jet out because like I said at around 30mph it bog down so I decided to with a 115 jet. Sir she runs like a dream. Thanks to your videos YOU gave me the confidence to do the work myself. Saved money and learned a lot.
Hello my friend I'm very happy I was able to help you thank you for watching my video
@@VirberelloScooterTips Will it still work with the stock muffler? I want to keep the sound as quiet as possible.
@@someguyto4675 Hello my friend yes with the stock muffler you will be ok
Great video as always! I changed my mainjet only ... Forgot the spark plug... Thank you... Love from South Africa.
Thanks for the video...you're a good teacher my friend !!!!
Hello Cliff thank you for watching my video and be safe
Hello my friend always very helpfu !My 150.cc came with a sealed 24mm carb . I just discarded & installed 26mm Japanese keihin carb ! Best $ 60. Runs with the wind ! Trying to come across EFI injection push button tune ( wish list lol ) just dont have the $500 to spend. Always enjoy your vids & have plenty of scooter parts to donate to the cause & send' em free . Great job / Vid 👏👏💯🛵👊
Hello my friend thank you for watching my video
Always find you videos very informative: thanks
Hello David thank you for watching my videos
Thank you sir, keep making tour videos as they really help. And an getting more confident with your help.
Hello my friend thank you for your answers on my questions you are the best i follow everything you say and its always spot on thank you from south africa
Hello my friend thank you for watching my videos
Hello I replaced the idle speed jet with the accommodating 45 that was with the 120 and the acceleration is way more crisp at the beginning, definitely a difference. It also got rid of the popping from decel. I recommend you do a video on it, I’ll send a video of mine to your email as soon as I can.
Hello Bakeman58 Niceee no more popping and great idea for a video
virberello GY6 Scooter Tips Hey! After riding it today, I came across popping again, but less then before. Back to the drawing board, will keep you posted.
Brilliant video. Thanks
Hello Angelo thank you for watching my video
Wanted to follow up on final conclusion on the popping on the 150cc powermax from taotao....
I went through a vary of jets to find that the 120 is the best, I also put the biggest idle jet that it could take from the jet kit your recommended. It still pops, but not as much as before. It seem as if you close the throttle quick it does it, but if you decelerate using the throttle slowly, it doesn’t pop. I like to use the analogy of riding a regular motorcycle. They teach you in motorcycle class to use the clutch to decelerate vs. the brake if applicable. The same should be applied to this automatic gy6 system I believe. I may try to completely get rid of the popping in the future but for now I just want to ride it. I did check the boot to the carb from engine and air filter and they were tight as a stack of bricks. I still recommend doing a idle jet video as it definitely made the powermax sound way better and better idle acceleration. Will be doing your shock video soon that you just posted.
I’ll keep you posted as to any ideas I have for you to post. You do a great job and I always look forward to watching your videos. Take Care and Be Safe on the roads, always wear a helmet, even if it’s just a half helmet.
Hello Bakeman58 great I'm very happy that your scooter is running a little better for you . Thank you for watching my videos and be safe
I had the same issue until I removed the PAIR system. It popped like crazy when I closed the throttle. Now it revs bag down smoothly and no popping👍
Hey man I appreciate that I think that helped me a lot with the
Thank you for watching my video
Great teacher.
Thank you! 😃
I'm trying to get a little bit more performance out of my Tao tao thunder50 cc. Thanks for the video
Hello the best for a 50cc is to place a big boar kit
Yup. Big bore kit is the most noticeable upgrade you can do. Aside from that you can change variator weights for more low in power or more top end depending on what is more important to your use.
@@vamountainman2512 thanks. I use My scooter as a to and from work transpo I already have over 7100 miles on it in a little over a year. I just don't want to jeopardize it's longevity. With these gas prices I'm trying to get All the Life out of it as well as I can. Thank you again. Have a great day
@@vincenttorres328 Just don't go extreme on the big bore if you do. They make a wide variety of kits. I dont recall specifically what sizes are available but something in the 80cc range shouldn't be "too much" of a detriment on longevity. I wouldn't do any of the big bores that involved shaving heads to achieve. At that point you should just buy a larger bike. Your safest bet would be to play with your variator weights to see if you can achieve the extra torque or top end you seek. Buy a variety of variator weights and try to tune it a little :)
@@vamountainman2512 I was suggested to do an 80 c kit. I'm not sure but part of my ride to work puts me on a small portion of highway and today I was almost run down by some idiot in a cargo van on his phone who couldn't see me turning into my work. It's just crazy how people are. IDK. I just know I need to get it done so that one block of highway isn't an obstacle on my commute. Thank you for your comment
thank you
great job perfect my friend
Hello my friend thank you for watching my video
Wonderful video my friend, thanks
Hello my friend thank you for watching my video
That's a pretty good idea
Hello friend. Thanks for the good video as always.
Thank you too
Hey , just subscribed to your channel , excellent videos very well explained! Were you ever a Vespa technician? Cause you plain very well
Hello G Guido no I never work on vespa but one day I will love to buy one and make like a rocket vespa a very fast one ah ah ah thank you for watching my video and subscribing to my channel
Great Video
Thanks!
Great video viberello
Hello my friend thank you for watching my video
Definitely some useful tips! Will I be able to get better air/fuel intake by just swapping out my stock air filter with the performance one without a big bore upgrade?
Hello SegaDisneyUniverse yes you can change your filter for a performance without a big bore upgrade but you need to up jet your main jet to keep the balance air/fuel ratio. Thank you for watching my video
@@VirberelloScooterTips Ah okay, thanks for the info!😄👍
Grande...come sempre...#1
Ciao Vladi Grazie mille
Hi, question and the fuel mixture screw
I am refering to the screw thats near the manifold side, which I believe is the fuel mixture screw, does changing this screw setting only effect idle or does It have any effect on WOT?
TY
Hi, you really put out great videos! I have some 50cc mopeds, all gy6,,,what type of upgrades should I start with that will help top speed and response that are EASY? I was thinking exhaust and carb maybe? What are some things you reccomend? TY again!
Hello my friend like for a 150 cc for a 50cc you need a combination of modification to have a little more performance out of your scooter start by changing your variator weight little lighter then changing your carb can help a little or just changing the air filter and the main jet but the best for a 50cc is to change to a 80cc big bore kit and that will make a big difference in the performance. Thank you for watching my video
Hello, thank you for the informative videos! I have a 2020 Tao Tao Eagle 150cc. I’m wondering where I can buy the carburetor and what I should be looking for.
You can try to buy from racing-planet.com :)
I have a round plastic piece with two large hoses coming out of my gator 50 cc scooter. Where do they attach?
Great videos mate very useful info...got a piaggio fly 125cc with cone filter and exhaust; live at sea level..what size main jet you recommend..thanks and keep the videos coming
Hello Nicholas I like main jet #120 thank you for watching my video
Once again thanks a lot man from Gainesville. I just put one of those $35 eBay performance shorty exhaust on and she's backfiring and I'm guessing maybe that's why is because it's too lean. I'm about to put that intake to you have and a uni filter so that I can oil the outside foam to repel water. I'm guessing I should probably start with a 125 jet if I have those two modifications? Man that exhaust was a pain in the ass I had to cut and bend it to fit. Plus I cut out part of one of the brackets so the dipstick could fit in the slot I cut out but I got lucky and that top bracket that I cut out to fit around the dipstick actually was able to bend to mount right to the swingarm. I already had two Mufflers break off at the manifold so I'm really happy to be able to mount the bracket on this one so it's not bouncing around and it holds solid in place. Anyway man keep up the good work.
Hello Mike yes start with #120 or # 125 main jet a see the performance I had the same problem with my performance exhaust I had to bend and slightly twist to fit the muffler . thank you for watching my video and be safe
And by the way you sound just like my grandfather who is from Sicily so I tell everyone around the University of Florida to subscribe to your channel but these rich kids aren't really will to work on their bikes..
I have a 150cc Aldy thunderbike with a actual CVK Keihn carb. I'm going to use performance air cleaner I'm going to use a 115 main. What pilot jet would you suggest I use. I can't read it and its trash. I asume 35 to 42 what would you use. Like an idiot I ripped Slide Diaphram, how do I figure out part to order. KEIHN CVK ON ONE SIDE OF THE CARB AND 017CZHW on the bowl base on the other side. Thanks for you videos I'm going to use them to a big bore kit and you other performance mods on your videos.
I upgraded to a big bore kit, I think it’s now supposed to be 80cc, what Jett should I move up to?
I am having a problem with my carburetor it looks like gas is going to it but it is not taking in the gas. It will only start with starter fluid but than shuts off.
HOOOOWWWW.. great video
Hello, thank you for the informative videos. I have a taotao 2020 eagle
150 cc scooter. Can you tell me how to buy a carburetor? I do t know where to begin. Thank you
Hello Luz thank you for watching my video
Hello Virberello, I have yiying yy125t-19. is it possible to chip the engine and get more power? what would be your first things to do on increasing power, performance?
*changing air filter
*main jet to go richer
*spark plug
*something else??
thx for videos, i was able to fix the horn, and now working on fuel level sensor.
I will add a performance CDI and lighter roller weight around 12g for little more torque thank you for watching my video
Hello, I just discovered your channel. I have just gotten a 169.8 cc scooter with a gy6 engine. I live in Montana, at an elevation of 4800 feet above sea level. Should I worry about changing my main jet, or should other adjustments to make sure that I am getting the correct ratio?
Hello Phillip thank you for visiting my channel at your elevation a #105 or # 110 main jet should be great 👍 thank you for watching my video
My 150cc makes popping sound on deceleration, I do have a performance filter but it was doing it when I had the stock filter. Do I still have to replace main. Jet or pilot jet? It comes from the tell pipe.
Hello my friend if you have a performance filter is better if you up jet your carburetor to a #120 main jet if you have a 150cc scooter but if you had a popping before the performance filter that sound that you have a crack or a leak at the manifold in front of the carburetor or at the manifold gasket because on deceleration your scooter is getting some extra air so try to upjet and see if you see an improvement thank you for watching my video and be safe
My friend I bought the nibbi elbow for my gy6 150cc scooter, the ( icebear-Hawkeye) my question to you is what size main jet ended up working for you the best was it the 115 as you shown in this video or did you change it again ...? I thought I ask so I could hopefully get it right the 1st time 😁👍 I live in turlock California about 100 ft above sea level , my original Airbox j hose keeps ripping like if my scooter is melting it nice indicator of running to hot so I thought I go with the aluminum nibbi elbow and nibbi pod filter after watching both of your videos how to install the nibbi high performance air filter it is very important to me what size main jet is working best for you ....? Thanks buddy 🤝
Hello my friend for me and my location in Florida at sea level my favorite main jet was the # 125 for your location could be the #115 but also in your area for sure you have less humidity and that could be a factor to keep in mind. Thank you for watching my video and ride safe
150cc VIP with a 24mm carb,42mm filter & high flow exhaust & 19.69’ sea level.What should my main jet & pilot jet should be?
Hello my friend I will place a 38 pilot jet and 120 main jet for your location . Thank you for watching my video and be Safe
What if I have a performance air filter and a big bore kit? Then what main and pilot jet should I switch too? I also upgraded to 1500 rpm contra spring and clutch springs. On that note what should my roller weights be? Please help me out cause I need it for work and it wont stay running right now! Without full throttle. But dies if I let go of the throttle. I got the new clutch and varaitor cause the rear wheel wasn't moving at all! New belt too. But please help me out
Hello Michael if you have a big bore and is 170cc 180cc 200cc 232cc and you like to change the main jet and pilot jet you need to test and tune your scooter for your location and altitude to find the perfect match try to place a 38 pilot jet and a 130 main jet and at the same time place a brand new spark plug run for 100 miles that way then remove the plug and see the color of the ceramic around the positive electrode a see if the color is a coffee or is to white the problem that your scooter is running only at fool throttle try to check the clearance at the valves for the variator weight if you have a big bore above 150cc I will place 16g because you will have less vibrations on the scooter. I hope this can help you plus join Chinese Project Scooters on face book there you can post videos or photo of your scooter
Have a question I put a bigger cam shaft on my 150cc scooter and I have the same air filter that you have and put a 115 main jet if I put the air filter on A bork down so I took it off now when I do like 55 to 60 and let off the gas and try to give it gas it Bork down what u thinks wrong love your video keep up the good work
Hello Botz god many times when the motor bork down the fuel does not flow in the fuel hose fast enough to supply your motor and few reason can be bended hose or bad petcock or bad fuel cap , Thank you for watching my video
Thanks I will take a look
will the air filter rubber boot fit directly on the carburetor flange or do you absolutely need to have an extension pipe?
Hello Esteban in the gy6 150cc you do not have a lot of space in the back side of the carburator so you can make your hand made extension or you can buy one . Thank you for watching my video
So happy I came across your channel. I have no shops in my town that works on any scooter. I have a 139qmb 50cc. Changed exhaust air air filter. I was unaware of this rejetting. I’m 1100 above sea level and have no clue on jets to use? And do I need to change both jets or just the main. It would be great for some help with this. Thank you
Hello ANDYTHE BOOT you only need to change the main jet not the pilot jet unless you place a larger motor displacement or big boar kit for an attitude 1100 I will place an #85 or #88 Main Jet and I will do a test run to see if your scooter will perform a lot better see When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't, your engine may sieze on you.Thank you for watching my video and be safe
virberello GY6 Scooter Tips thank you so much for the help.
virberello GY6 Scooter Tips ok i went with the 88. Seems to run pretty good. But a few times it did hesitate and then shut off on me. Should I go up to a 90 or down thank you.
Hello Andy things are 2 there is a possibility that you have a air bubble inside the fuel filter that slow the fuel flow or if you have a fuel petcock valve on your scooter you need to place a fuel switch see when you place a large jet the fuel flow is faster so any little thing can give you problems
Thanks a bunch for all of your informative videos. I have a 2006 wildfire 150cc...i live in Wisconsin and the carb came with a stock 102 main jet. I have put on a cold air filter like yours. The carburetors needle has settings and it’s set up two notches from bottom. What main jet would a good guess for where I live? Plz/thx
Hello Daniel if you are at high elevation #108 to #110 will be great if you are at low elevation like sea level #120.
Thank you for watching my video
What’s the name of that air filter cone and intake? Niby? Or something ty. Have a good day
I went with a 109 main jet in my carb. I’m having bogging down once I’m on the throttle. I have idle screw out two turns. The needle set half way. When I went to cold air intake and removed stock box. There was/is a hose. I vacuum line to bottom of stock. If I didn’t do anything with that. Would that cause the bogging?
It idles perfect. Also a new Cdi box and plug. Also new carb. It’s a 2006 150cc wildfire gy6. Mainly I’m going nuts with it running so well but I hit throttle and just Boggs.
@@danielgraf2447 did you get found out what worked?
I just moved my jet from a 78 to 85... It doesn't slow down at 20-25 and runs better for sure. Just replaced coil pack and spark plug too. My carb is about 4 days old and went from an air box to a performance filter. How it keeps running okay as last week it wouldn't go above 5mph and when I have it gas it would sputter and die. Why did that happen? I don't know what I'm doing but have done all this by watching your channel so thanks👍🙋
Hello Mikey Pee so your scooter is a 50 cc if you have big bore kit you can use a 85 main jet but for a 50cc is a little to much so your scooter is not running good because you have an unbalance to the 14.1 to 1 part of gas. Thank you for watching I hope this can help you
@@VirberelloScooterTips it is a 1p39qmb and it is a 64cc. I just got to work and it ran so much better! It didn't whine or vibrate at top speed and top speed was minutely increased. I'm not a mechanic be any means but it feels way better.
Also I put in 93 unleaded
I've been tuning my scooter and I live out of Wisconsin 837ft above sea lvl I got a150cc gy6 with a 40pilot and right now 135 main jet I have a aftermarket cdi box exhaust and nibbi filter tube I changed the main jet and now I got cuttin out problem about 1/2 to 3/4 would I need a 130main jet then?
Hello my friend try to place a 130 or 125 and do a test run and you also have to keep in mind the outside temperature . Thank you for watching my video
I have a 2 stroke 49cc scooter and at full throttle it boggs out, I noticed it start doing it once I put a performance filter on it. Should I put a bigger main jet in it?
Hello yes if you place a larger performance filter you need to balance the ratio so you need to change a main jet to a 80# or #85 depending on your altitude with a 49cc scooter. Thank you for watching my video
The box u resting u arm on is an air filter am i correct so u have 2 air filters confusing thanks southafrica
Hello servant of the servant the old filter is there but the one that the motor is using is the high flow air filter I just left the old filter there for now for a future project
Hello sir. I have a buggy with a gy6 I got a new carb from Amazon. It came with a cone filter so I removed the air box and put the cone filter. But at wot I'm getting braking up non stop. Is not smooth. I felt it smooth fast for abit. But most time at wot full speed it just keeps braking up. What you recommend. A small main jet? Thank you
Hello Fernando if your motor is a 150cc and you are at sea level you will need a 120 main jet but every 1000 ft up in altitude you need 2 size smaller
hi bro how are, you ,love your video keep up the great work , i have just built a 63 mm big bore with a 3 mm stroker i have a 30 mm cvk carby with a cold air intake and a performance exhaust what size jet would you suggest i live in Melbourne Australia 30 meters above sea level
Hello Brian wow 63 mm very nice with that set up you can change the pilot jet to a 40# and the main jet to a 130# and place a new sparkplug and after a week of riding check the color of the sparkplug if is to white on the ceramic place a 135# main jet . Thank you for watching my video
@@VirberelloScooterTips thank you will do , your video are really good you take time to explain to ur viewers , you would be one of the best for given advice to ppl cheers , i have the case with the 57 mm spacing so there is more room on the sides for the barrel bigger bore
What size main jet can I use for my bike it’s 150cc setup with a Hi performance air filter I modified I performance CDI and high-performance carburetor what Main get should I use for a greater Performance
Hello my friend with your set up you can place a #120 main jet and if you live at sea level you can also go to a #125
Hello i'm new subscriber, thanks for the great explanation, love your videos. I live in Indonesia. Need your advise. I have Piaggio zip 100 Quattrotempi here. Days ago i found out that the sponge element inside stock air filter box has falling apart, the original sponge is about 2cm thick oil wet type. then i change it with a thinner one, only 0.5 cm thickness and dry without oil. i did some adjustment on mixture screw and it running well on idle, now the problem is when it comes to the rpm range of main jet, it bogs down. i am pretty sure i cleaned up all the carbs component thoroughly. and installed everything tightly & correctly. Do i need to change the main jet? the stock is 38 pilot jet, and 78 main jet. What main jet number you recommend to max out performance for this 96cc 4 stroke with stock Keihin CVK 20 carb?
I live in 115m altitude in tropical climate, average day temperature 30-35 degrees celcius. Oh maybe you need to know that the carb is very similar to chinese gy6 50cc, maybe slightly different size. Stock engine with 1:11 compression ratio, 49mm stroke x 50 mm bore. Grazie mille.
Hello Radeya the 38 pilot jet is great but you can place a 80 main jet or the best and easy way to fix the problem is to remove the remove the dry air filter that you place in the air box and place a clean new yellow kitchen sponge and that will help you motor to stay cooler and run better
@@VirberelloScooterTips wow thanks for your prompt reply, i got it completely. So to solve the problem is either fit more restrictive sponge as filter or change the main jet 1 number higher. Good idea on that kitchen sponge, as the original parts is rare & expensive here. Thanks again, & wishing the best for your channel.
Hello I have a 150cc wolf rugby 2 and installed nibbi air filter and a performance exhaust I live in Pennsylvania I was gonna rejet my carb to 120 do u think that would be fine
Hello my friend yes 120 is great but if you ride in the cold winter you will need to change to 110 for the colder air density
Hello friend i have a gy6 150cc scooter at 5500ft above sea level i have a performance filter and performance exhaust you told me to put a #90 jet in i did that and is eas running SWEET then i took the performance exhaust end tip off and now its back firing a bit on full throttle can you PLEASE give me some advice i only trust you for advice thank you
Hello my friend if your scooter start back fire with open exhaust try to place a #95 main jet
Hello. I changed out my jet for a 120 after putting in the air filter and exhaust..... it ran good for a little and now doesn’t start. Could it be the low end jet? What do you suggest? Thanks.
Hello Bakeman58 make sure the fuel flow freely from the petcock to the carburetor and all the hose are still connected like vacuum hose and fuel hose but many times when you change the jet on the carb air bubble goes inside the fuel filter and make vacuum inside there now what you can do open the fuel tank cap disconnect the hose that comes from the tank to the petcock after the fuel filter and let the fuel flow in a small bottle for about 10 oz of fuel ate the same time when fuel flow from the hose connect the hose to the petcock and fur sure the bubble of air that you have inside the air filter is gone if the bobble is still there repeat the process one more time and not you do not need to change the pilot jet unless you place a big bore kit that will bring your scooter over 150cc and above
hello friend i live 2500m above sea level and drive a 150cc gy6 scooter with a performance cone filter and performamce exhaust i did put in a 100 main jet but on low revs it sputters and on full throttle it pulls nice can you please give me some advice thank you and love your videos
Hello my friend I have the feeling that you could change pilot jet to a #35 for sure you have a #38 at that altitude you have less air density
I’m running stock filter. Mine came with 102 main jet…. I’m in Wisconsin.. would 115 be too much or should I go with 105 or 108? Any help is appreciated! Thanks!
In Wisconsin, for your 150cc GY6 scooter with a stock 102 main jet, try the following:
105 Main Jet: A good starting point if you're experiencing lean conditions.
108 Main Jet: Provides more fuel than 105; a middle ground option.
115 Main Jet: Likely too rich for a stock scooter unless you have significant modifications.
Start with 105, check performance and spark plug color (light tan is ideal). If still lean, try 108. Adjust as needed based on these observations.
i have a 100cc zongshen whats the best main and pilot jet to make it faster
Hello Jack the best main jet for 100cc is #95 but many times all depend on the altitude so If you are a lot higher then sea level you can place a smaller jet #90 but at the and is all about test and tuning
I live in North Carolina,a gy6 150cc is a 125 main jet good.I would like your suggestion
Hello my friend if you are at sea level place a # 120 main jet that will be better and at the same time put a new spark plug after 100 miles remove the spark plug and look at the spark plug electrode color
Thank you.Keep more videos coming
Hello it’s me again I just installed the same cold air intake as yours and I have a performance exhaust also. I know you told me to put a number 120 jet but I forgot to mention that I am in the mid west I am located in Illinois. Would a 115 jet be better since I’m above sea level? I’m 500 and something feet above sea level people are telling me to put a number 115 but I wanted to ask you before I do anything. I love your channel it is very helpful and informative. stay safe riding and God Bless❤️✝️
Hello Ryan if you are 500 feet above sea level and the air is a little cooler at your location #115 will be great . Thank you for watching my video and be safe
virberello GY6 Scooter Tips thank you for the reply I love your channel you’re very helpful Thank you for the help😁 ride safe and God Bless❤️✝️
Hello friend, thank you for your videos, they are very helpful for many of us who follow you on your channel. I have a chinese scooter with gy6 150cc. I installed your same intake with uni filter and a performance exhaust, additional change according to your past videos cdi box, 11g variator, coil and sparkplug. I live in central florida 138 feet above sea level, my area is relatively flat and I still have a top speed of 55mph. What combination do you recommend that I use in my carburetor (rejet) and any other changes that I should make? Thank you my friend I will appreciate your help!!!
Hello JP Sports If you live in Florida I will suggest #118 main jet #120 is more fun but fuel consumption i going to be a lot higher thank you for watching my videos and be safe ride smart
virberello GY6 Scooter Tips Thank you so much buddy. I will try that 👌🏻 Blessings
My 150 hit 65+with out no nothing new
hey i have this 24mm pwk carb and it just fills my bottom end with fuel whenever i go to try and start my bike idk what to do ive cleaned that thing so many times theres not a spec of dirt in it. i made sure the needle valve is siting right. i tried what he did in the video twice and it just caused my carb to overflow with gas and spew everywhere. anyone know what i shloud do to stop it from filling the bottom end with fuel
It sounds like you're experiencing a flooding issue with your 24mm PWK carburetor, which is causing fuel to fill up the bottom end of your engine. Here are a few steps you can take to troubleshoot and potentially resolve the problem:
Check Float Height: Ensure that the float height is set correctly. If the float height is too high, it can cause the carburetor to overflow with fuel. Refer to your carburetor's manual for the proper float height adjustment procedure.
Inspect Float and Needle Valve: Check the float and needle valve for any damage or wear. If the float is damaged or the needle valve is worn out, it may not be sealing properly, leading to fuel overflow. Replace any faulty components as needed.
Verify Needle Valve Seating: Even if you've checked the needle valve seating, double-check to ensure it is seated correctly and not allowing fuel to pass when it shouldn't. Sometimes debris can prevent the needle valve from sealing properly, so thoroughly clean the valve and its seat.
Check Fuel Inlet: Ensure that the fuel inlet into the carburetor is not blocked or restricted. A blockage in the fuel line or inlet can cause irregular fuel flow, leading to flooding.
Inspect Vent Tubes: Check the vent tubes on the carburetor to make sure they are clear and not blocked. Blocked vent tubes can cause pressure buildup in the carburetor, leading to fuel overflow.
Consider Fuel Pressure Regulator: If you're using a fuel pump or high-pressure fuel system, consider installing a fuel pressure regulator to prevent excessive fuel pressure from overwhelming the carburetor's float valve.
By carefully inspecting and addressing these potential issues, you should be able to troubleshoot and resolve the flooding problem with your carburetor.
hello my friend i live at 1700m above sea level i'v got performance filter and performance exhaust with a 100 main jet but my 150cc gy6 still sputters and my spark plug burns black please help me with some advice thank you
Hello my friend if you are 1700m ( 5500 ft ) above sea level you can try a 90 main jet
Hey so I have a tcs dykon 50cc 4 stroke moped I’m at 814’ ft elevation in Arkansas I put basically the same performance filter you have on no boot necessary I wanna know what main jets you recommend to try on it and I think maybe my piston rings are messed up it’s running very rich an burning oil an I think there’s gas in the oil and oil reaching into the exhaust?
It sounds like you're dealing with a few issues with your TCS Dykon 50cc 4-stroke moped. Based on the information you've provided, here are some suggestions and recommendations:
Main Jets: Since you're at an elevation of 814 feet, you might need to adjust the main jet size to compensate for the change in air density. Generally, at higher elevations, the air is thinner, which can affect the air-fuel mixture. You may need to go for smaller main jets to reduce the richness of the mixture. However, the exact jet size can vary based on factors such as your specific modifications, riding conditions, and preferences. It's advisable to start with a slightly smaller main jet size and then fine-tune from there. I will try a 75 or 72 main jet and try that on the road
Rich Running and Oil Consumption: A rich-running engine and oil consumption can indicate a few potential issues. It's good that you suspect piston rings, as worn or damaged rings can lead to oil getting into the combustion chamber, causing a rich mixture and oil consumption. Additionally, gas in the oil can result from incomplete combustion due to the rich mixture.
Piston Rings: If you suspect issues with the piston rings, a compression test can help diagnose the problem. Low compression can indicate worn rings. If confirmed, replacing the piston rings could help resolve the oil consumption and rich-running issues.
Carburetor Adjustment: Recheck your carburetor adjustments, including the idle mixture screw. Make sure the air-fuel mixture is properly balanced.
Exhaust System: A malfunctioning or damaged exhaust system could contribute to poor combustion and oil contamination. Inspect the exhaust system for leaks or blockages.
Oil in Exhaust: Oil in the exhaust could be a sign of oil being burned in the combustion chamber. This could be related to piston rings, as mentioned earlier. It's important to address this issue, as excessive oil burning can lead to fouled spark plugs, poor performance, and potentially even engine damage.
Remember, making modifications to your moped's engine and carburetor settings can have significant effects on performance and reliability. It's essential to approach these changes carefully and methodically to achieve the desired results without causing further problems.
Thanks for taking the time to give me a detailed answer appreciate it
So after adjusting the your scooter 150cc do the back wheel need to trying to spin a little?
Hello if you like you can keep the idle little high like on my scooter so I'm ready at any traffic light at that point yes your tire will spin a little
I have been a fan of your Channel for a long time I have a question for you ... can you change your intake manifold plastic piece 2A like a paper gasket? ..n not damage the engine .. I have a 80cc Bore Kit.. a performance air filter .. n a sports exhaust pipe on it ..
Hello Mike I'm not to familiar with your scooter if is a gy6 yes you can but removing that plastic piece will make your carburetor seating lower and in the long way something will go wrong like braking manifold or cracking the lower carburetor bowl its all about trying.
Thank you for watching my videos
ty u for the info..n yes it's a gy6 motor .. n I have a racing variator to..n it's a velocity 21st scooter .. n I have a Channel 2 😁
Hello my friend I am back. What main jet would you recommend if I have the Nibbi intake tube with a high-flow foam filter, along with a high-flow racing exhaust? Also, my stock carburetor might be sealed so if I buy a new one would I benefit from buying a 26 or 28 mm carburetor? Thanks again man.
Hello my friend for the main jet for best performance need to be base on your altitude and yearly everage temperature of your location for Florida at sea level for all year araund #120 main jet is great but less air density in altitude and colder weather like up north you will need a #115 or #105 main jet is all about test and touning or install a air and fuel sensor at the exhaust that will tell you the perfect ratio and that will be very cool with a little display ah ah ah ah for the carb I prefer a 26mm because the carburator space is very limited and you like to give little room to the carb to vove around . Thank you for watching my video
@@VirberelloScooterTips thanks man I heard that a 26 mm carb is too big but I don't know if that is just a rumor? I heard that this is due to the intake of the cylinder being only 24 mm? Is that true? I used to race for R&D Yamaha but my mechanic did all the work lol. I live in Gainesville but it's still too cold so I plan on moving to South Florida after my spring semester at college. I was thinking about starting with a 125mm main jet
@@VirberelloScooterTips I'm in college so I'm on a very limited budget but I weigh 200 pounds and I'm going to upgrade the final drive gear because I'm always struggling to keep up with traffic and I feel like I'm going to ruin my engine due to excessive RPMs. Can you recommend an affordable carburetor because mine is sealed from the factory.
would like some advice on jetting my 150cc Chinese scooter. im reading my 150cc ruckus clone should be good for high 50mph to 65mph. right now i have a top speed of about 48-49mph and riding with friends it definitely doesnt feel like a 150cc at all. so i thought maybe my jets. stock main was a 103. i put in a 108 and 110 and they both feel the same. i tried a 115 and it was slower, like 45mph. the air filter i have is not stock, its a rubber tube with a cone filter but its only about 5" long and straight. also have an exhaust on the bike. do you have any suggestions? i just would like to get full potential out of my 150cc.
am i supposed to adjust the fuel screws when i change jets? let me know what you think. thanks and thankd for your videos!
Hello my friend a 115 main jet should be great to get little more top speed you can change the roller weights to a 14g if you like a more torque change the roller weights to a 10g you can also buy a performance clutch with a 1500 spring and if your change the jet you do not need to adjust the mixture screw
@@VirberelloScooterTips i tried 115 jet but it made my scooter slower. any ideas why? i do have a Mikuni df44 fuel pump and was super disappointed when u put the jet in
Hi Virberello. I figured out yesterday that my boot from engine to carb had a crack in it!!! That was causing it not to start. Anyways, I replaced with a 120 jet. Still produces loud popping. Any suggestions? Should I go with a 125?
Hello Bakeman58 you can try with a #125 but I have the feeling that could be something else like the gasket a the base of the manifold or the exhaust gasket or the spark plug boot something is not right the only way is to keep looking and testing. there is 2 different popping to think about popping on acceleration electrical problem popping on deceleration air out of balance in the motor
I replaced the idle jet and it fixed the problem. Powermax 150cc 2020 idles at around 1-1.5 and doesn’t backfire. Definately do a video on idle jets, I used the one that was paired with 120...... it effects the idle rpms and and the sound when taking off.
What would you recommend for a 49cc 4 stroke that's riding at 32 feet above sea level? I have a uni pod filter on it, and I think my main is currently an 82
Hello I will place a #85 main jet is a lot better
I put it in there and it runs pretty well, but it's struggling in idel a little, and I seemed to have lose a little top end, and sometimes it'lldo this thing where it'll sputter a bit, and then get going. I put an 85 main in, and put a 35 slow jet idk what I'm doing wrong here
@@VirberelloScooterTips I would like to know the answer to the second question they asked as well.
Hi I have a 50cc with a 100cc big bore kit I live in New York at 22 feet altitude I'm not sure which main jet should I use. I put a 92 main jet.
Hello 92 sound good but a 90 will be better with the fresh cold weather
@@VirberelloScooterTips Thank you for the tip!
Hello can a cracked exhaust pipe throw your air mixture off. I just put a 120 jet in it. At full throttle the scooter Boggs out. But my exhaust is most definitely broke.
Hello DJ BUNN-E no the exhaust pipe will not throw your air mixture off but your scooter will not run at best performance because scooter needs the have the right ammount of air in and right ammount of air out so the scooter will build better backpressure
@@VirberelloScooterTips Ok i found out what was the problem, I had to change my main jet to a 115 from a 120. Run much better.
I have a 150 cc I live in Philadelphia it tells me 39 feet above sea level what jet should I use I have a air intake
Hello Bertito I like the airflow filter but you need to remember that those filters are not rain friendly so if you use your scooter everyday is safer to have a stock filter and change your carburetor main jet to a 115# or 118# . Thank you for watching my video and ride safe
I have a nibbi carb whats the best jet setup for it in my 150cc
Hello Antdizal Parker is all depend on your altitude and location but if you live like me at sea level #125 main jet and #40 pilot jet will be a great set up but if your location is higher every 1000 ft up in altitude your jet will need to be 2 size smaller. Thank you for watching my video
Hi . I have 125 cc scooter with stock air filter how can i know the size of the main jet and what main jet size should i use ( i live at sea level ) my scooter odometer is 140 km max but it can only do 95 km
Hello to find out what is your size main jet you need to open the carburetor and look if you see a number on the main jet and if you are at sea level you will need a 115 main jet
Whats a good after market main jet # for 50cc gy6 ....i put an after market air filter....& changed the CDI & plug..i have more power on the Low end took from the high.
..what do u think about changing rollers
Hello David I buy lots of parts on Amz because I like to check the reviews and show a good product to my followers and prices are good for a main jet on a 50cc you can click this amzn.to/39kV563 they look good changing the rollers is cheap great update but do not go to low or you will have to much vibrations on your scooter my favorite upgrade are the main jet +the air filter+ a good performance exhaust that is where you scooter get little more life but will get more nice too anyway thank you for watching my video
@@VirberelloScooterTips thanks..... if u want check out this site BangGood.com 🤣 i kno it sounds like a porn site but its all shit direct from China...but i agree especially when first startn out Amazon has reviews and pretty good customer service 👌..& again thanks ..i just ordered my velcro for my floor mat. 🙏
Thanks PANA!
Got a nibbi elbow...uni pod...NCY proforma Exhaust...lil pricey got it on sale..way better then a cheaper one i had on i got from the chinos ...so 🙄 ju know! 🤣. Keep. The vids come'n...do u have a way to support your channel $$ people can help...but not through TH-cam.
I put a 100cc on my icebear maddog. What is the beat jet for it. I live in wpb fl.
Hello Felix 88 or 90 main jet will be great
Can I use the same pilot jet or should I change that to
Hi again,
what size of main jet and pilot jet should I choose for a gy6 50cc (Kymco Agility 50) with a performance air filter and larger exhaust.I don't know how to identify the carb if it's 18mm/24mm/26mm, because I get the scoot from a friend of mine.
What about the throtlle needle?What position did you choose for the washer?
And why didn't you change the pilot jet also?
Thanks.
Hello my friend I will not change the pilot jet unless you install a big boar kit but if you install a hair filter and you have a performance exhaust I will change your main jet to 85# and I will not change the needle position or you can test and tune and if you find a little problem at 1/2 throttle you can change washer little higher anyway every time you change the jet change the sparkplug so you can read your plug after 100 miles and see if you get the right reading like a coffee color . Thank you for watching my video
@@VirberelloScooterTips Hello, so if I ordered a set of these jets like in your video aren't good for my scoot?They are for 150 and not for 50cc?
@@Alexclk230 Hello I'm not to familiar with the Kynco jets because they work with Honda parts and sometime they change jets shape so the best thing to do is to remove your jet and make sure you order jets that they look the same like you have my jets are made for gy6 150cc but check this ones amzn.to/3szHNf9 to see if they look the same like you have because honda sometime change the threading
@@VirberelloScooterTips Ok, thank you very much.I will buy an 85# to make sure I have it 😀.
Any recommendations for a 50cc gy6 performance filter what jet upgrade
Hello my friend if you are at sea level you should try a 80 main jet. Thank you for watching my video
@@VirberelloScooterTips wanted to know what would be a good carburetor for my 50cc looking to upgrade carburetor.im also planning on a bbk so want a carb that works for the 50cc until I do the bbk .How many milameter should the new carb be .
Hello I currently have a intake and exhaust on my 150cc with a #115 jet I live in Illinois. If I add a big bore kit do you think I will be fine with the #115 or should I go to a 120? and I heard I would have to change the pilot jet also? If I decide to add a cam after the big bore kit would I need to up jet even more Then 120 ?Thinking about adding a big bore kit just not sure if I want the bigger cam or not. If you can help me with some jet numbers I would really appreciate it! You have helped me a lot in the past😁. What would be the jet numbers with everything I have now then add the big bore kit without the cam? and then if I add the cam. Hopefully my question isn’t to long or confusing thank you😁
Hello Ryan if you place a big bore kit you can you can change the pilot jet to a size #38 and your main jet to a #120 at the same time place a new spark plug and after 100 miles you can read the color of the plug to make sure you have the right ratio. Thank you for watching my video and Happy Holidays
@@VirberelloScooterTips Thank you!! Happy holidays to you also. If I put the cam also should I leave the main jet at 120?
One more question what if I only get the big bore cylinder kit and not the head?
Hey question for u...tried changing my jet today with a 115 and it won't fit into the thing the old one was screwed into what is that thing called so I can get a bigger one?
Hello my friend you need to find on line the same type of style jet but larger or you can make the one you have a little larger with a mini drill beat
@@VirberelloScooterTips thanks for the reply...yes after I asked u the question I believe I found the right jet it will be here Friday
So changing the main jet do I have to change the air fuel mixture .
Hello my friend at idle you do not have to change the air fuel mixture, Thank you for watching video
do i have to worry about water getting in trough my air filter?
No if you have a stock filter but high performance filter do not work great when wet
I have a 150cc bintelli I just put a performance air filter and performance exhaust I am 668 ft above sea level. It currently has a 24mm carb.. I am changing it to a 28mm wich one do you recommend
Hello my friend my favorite carb is NIBBI High Performance Speed Modified Carburetor Kit PE28MM Carburetor GY6 amzn.to/3LUTA1J thank you for watching my video
@@VirberelloScooterTips thanks 🙏
Hey mr virberello My 28 mm carb is here I am 204 meters elevation.. what size jets should I use.. I also have performance exhaust and and I am putting a 48mm air filter.. is a 150cc gy6
Hello i recently did a performance exhaust on my 125cc but i backfires or misfires allot at fulle throtle. What main jet must i use. I have stock air filter?
Hello if your location is at sea level place a #115 main jet if you above 1000 ft place a #110 main jet
Its not all jets that solves problems like this. Maybe your ignition/cdi or sparkplug has a problem.
Harihariharibol im 5900ft above sealevel what jet do i use on my 150 thanks southafrica
Hello my friend every 1000 ft above sea level you have to go down 2 size on your main jet
What if I get a Carb Kit brand new, should I still Rejet?
Hello my friend to have a perfect running scooter we should rejet the carb regarding to the location altitude and longitude but if your scooter is a 150cc you can start at #105 main jet and start from there if you are at sea level you can have a #118 or 120 main jet and if you live above 1000 feet you can place a #98 to a 100 main jet thank you for watching my video
I upgraded to 80cc from 49cc.im having problems how to properly upgrade jets too any help .
Hello stauf09 for jeting on a 80cc you can place the main jet at #90 if you are at sea level and if you higher every 1000 ft go down 2 size in main jet
@@VirberelloScooterTips thanks a big much.
Hi Friend! What is the best combination of the main jet with the pilot jet at 800 meters from the sea level?
Hello my friend you will need to check your main jet size and every 1000 Ft you go down -1 size I will place a 110# but fist check your mainjet to see what is your actual size. Thank you for watching my video
@@VirberelloScooterTips the actual size is #35 and #114
I want to put a performance air filter. do you think # 38 with # 120 would be ideal?
I love your videos but dude you’re so rough with your stuff 😂😂 look how you took the bucket off and started shoving things away lmfaoooo
Hello Corey I get little rough sometime when things do not go my way ah ah ah Thank you for watching my video
What is the voltage and amp output on the stator/alternator
33 feet above sea level what number jet should I use? I have a high performance air filter
I would appreciate if you can help and respond I’m subscribed and like all your videos much love ! ❤️
Hello I will place a #120 main jet and test with that and see
@@VirberelloScooterTips thank you so much I appreciate you taking the time to reply !
I just upgraded my exhaust and air filter...I also replaced my main jet from 115 to 145 but I'm losing power above 30mph should I lower my main jet to say 120?
Hello try #105 with colder air you need a smaller jet
@@VirberelloScooterTips Thank you, the new carburetor came with an 105 jet. I never installed it. I put in a 115 or a 110 I can't remember but it ran great. I went up to a 145 because I now have the performance exhaust and filter. I bog down after 30mph so I'm gonna go back to 110 or 115 or 120. The 105 is a big no no. I bog down from 0-10. Like you side in your video...you have to play around to get the best results.
I hope you and your family is doing well...thank you again brother.
What's the thread diameter is it 5 millimeters aka M5?
Hello my friend the external diameter threads 4.976 the internal diameter threads is 4.134. Thank you for watching my video
I live in Maryland
New air flow , new high performance exhaust . Having some backfire. Heard that means running to rich , but if I upset , wont I bring more fuel ..so more back fire ?? Or no. I got my jet kit now
Hello my friend if you have a gy6 150cc and you change the air filter time to up jet to a #118 main jet you need to keep the balance of ratio 14.7 air to 1 part of gas and run slightly richer if you have less fuel you will run lean. Thank you for watching my video
virberello GY6 Scooter Tips I do. Also I have a high flow exhaust. 640 over sea level. Go higher ? 120 or 125?
the key is for every 1500ft above sea level you go up one size and for every 1500ft below sea level you drop one size
Niceee great idea and thank you for watching my video
Hello my friend I am back to annoy you with more questions. Like I told you before, I installed the little high flow, and I mean very high flow, shorty exhaust after my scooter was stolen and smashed apart. When I say hi flo, this thing sounds like a modified four-stroke on the motocross track. It's louder than I wanted it to be but when I see cops I just kind of lay off the throttle. Anyway, I need a new carb because like I told you, I added the high flow performance exhaust and it's backfiring and shooting flames out the pipe when I decelerate and I'm going to be adding the Nibbi intake tube and uni filter. My carb is the factory sealed version so I can't upjet it. I was wondering if since I'm changing the carb, would I get more performance out of just going up to a 26 mm carburetor, since I will be having so much airflow now? Thanks a lot for all your help so far and patience with me lol.
Hello my friend if I remember you have a 150cc if you do yes a 26 mm will be great so with a larger carb you will have a little more fuel related to the more air flow . Thank you for watching my video and be safe
@@VirberelloScooterTips thanks brother we should ride sometime haha
@@VirberelloScooterTips oh and I forgot to ask, Will it bolt writing or will I have to make modifications for a 26 mm?
Also, does the same sizes apply to 50cc?
Hello my friend for a 50 cc the jets are smaller and if you have a high flow performance filter at sea level you could have a 85 main jet max . Thank you for watching my video
17:26 🤣🤣
Man, his rear brake video is hilarious when he smiles, then frowns and says "ok cut it"...Virberello's tips are helpful & funny af at the same time
What jet should I use if I have a cold air intake and a racing exhaust?
Hello Ryan if your engine is a GY6 150cc and you location is a sea level #120 main jet is perfect . Thank you for watching my video
virberello GY6 Scooter Tips the current one in my scooter is a 0.4 or something like that. Don’t know much about jets. What would 120 be that seems a big big?
Also what jet would you recommend if I only put a exhaust and leave the air box stock.
I am 500 feet above sea level I am in the mid west
Hello I have a 50cc wolf gy6 scooter I live at sea level I want to do a air intake and can jet what size jet should I use it never gets below 40 in Florida
Hello Tyler I will try with a 85# main jet and work from there thank you for watching my video
@@VirberelloScooterTips ok thanks for the suggestion! After i use a #85 I’ll try going up and down.
@@VirberelloScooterTips update I put it on and it’s so loud I am currently with a #87 I might try a 89
@@lethargicstove2024 Great try to test run and try to find the perfect one
@@lethargicstove2024 how did this work out for you?