How to remove and clean Mini Pocket Rocket Bike carburetors and Fix the Overflow Problem
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- เผยแพร่เมื่อ 6 ก.ค. 2013
- Video on how to remove and clean the carburetor on 47cc and 49cc mini pocket rocket bikes and how to fix the common fuel overflow problem on these bikes. Thanks for Watching!!!
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Excellent video, I'm 15 and want to be a mechanic, so I brought a pocket bike as a project and was struggling with it, this vid helped me so much 👍
I started out on pocketbikes too now 5 years later i built real bikes keep goin with what Ur doin and u always learn from mistakes greets from Holland :)
Your instructions were exactly what I needed. Thank you for sharing your expertise.
Glad to help out, Thanks for Watching!!!
Hey thanks so much. I have a x2 super bike & it's been sitting in the basement for 2 years, ran perfect before. But now that I'm trying to get it started it just wont start, I know nothing about this stuff, but I was told to clean the whole thing up. This helped me get a feel of what to do, so thank you
Interesting set-up. Thanks for the how-to course.
This video was extremely helpful thank you
i'll have to try that! i've been thinking about using lacquer thinner, just have to watch plastics and rubber parts. thanks for watching!!!
thanks! heard that, let me know when you put it up and i'll check it out! thanks for watching!
Your welcome! I hear ya! yeah you usually have to do that if its been sitting, especially if gas was left in the carburetor and wasn't run dry. thanks for watching!
AMAZING !!!!! you solve my probleme :) continue your good work !!!
you can use paint thinner or lacquer thinner to clean the jet with, just keep it away from painted/plastic/rubber parts it will eat them like crazy, carb cleaner is the best, I use walmart brand supertech, its 2 bucks a can, great stuff! thanks for watching!!!
That was my question you answer it without even knowing thank you so much!!!!!
your welcome!
nice vid, you should do more pocket bike videos, there really good
good instructor,thank you!
Appreciate that! Thanks for Watching!!!
yeah, I like the butterfly valve type better, but these work haha your welcome, thanks for watching!
Thank you so much lots of help
Your welcome, Thanks for Watching!!!
Very helpful video thx
christian stone Your welcome, Thanks for Watching!
thank u so so much it helped me
your welcome, Thanks for Watching!!!
Man, this is such a great video. Really helped me, just have a question with the overflow problem, how bent must those pins be for the float?
Sebastian Le Roux Appreciate that! It just depends, there really is no set amount, to start with just bend them about a 1/16" to 1/8" and see what it does, trial and error pretty much. Thanks for Watching!!!
Old video but a great help
Glad to help out! Thanks for Watching!!!
Yeah it is, this type of bike doesn't use a battery, its pull start, and the power for the spark plug is generated from a magneto. battery is only needed on electric or electric start models. Thanks for Watching!
Thank you
Thanks! I'll try to do some more! thanks for watching!
fn i would love to see you try to fix up a maytag 2 stroke model 92 and see how well you can tackle that
I have a pocket bike 49cc 2 stroke but the pull start is broke and not rewinding all the way . so I ordered new pull start seeing if it will work
Hey bud, what kind of bike is that? I have one that's identical but silver and I need a carb
Hi thank you for the Vidio my pocket dirt bike only start with choke open then run on very high ref if I close choke it idles fine what can be wrong I did clean the carb
no problem, anytime!
What do i spray it with. I have some part cleaner would that work
you may need to use vice grips on them if the drive is stripped out, they will come out! thanks for watching!
Hey! I must say that I really appreciate all of your videos that you put out on youtube, they are really helpful and fun to watch! :D But I got one question for you: I have a similar pocketbike just like you. But when I am riding it and giving full throttle, after maybe 5 seconds the motor dies. And I have cleaned and reassembled the carburetor, but the motor still stops. Do you know what the problem could be?
In advance, thank you! Big fan from Norway
TheMechanic Hey! Glad to hear you like my videos, and glad to hear they help out! That sounds like its not getting enough fuel, either from a clogged fuel filter, pinched off fuel line or the float level isn't set right, in other words, the bowl fills up then when you give it throttle it runs out of all of the gas in the bowl before it has time to fill back up. Another possibility is the gas cap isn't venting, and its building a vacuum not letting the gas flow. Hope this helps! Thanks for Watching!!!
What fuel to oil ratio do you run on that bike
thanks, glad to help out! Yeah I just started doing a true/false or a question on certain videos, i'd do it on every video but i can't think of a good question haha Yeah, I'd rather see some smoke and know its oiled good then not having enough! thanks for watching!
I got a 2020 fit right and while riding it's bumpy how do I fix it so it rides smooth again?
First thing i would recommend doing is getting another plug (even a plug from another engine, just to test) to make sure its not the plug, OR take the plug thats in the bike out and check it in another engine for spark, just rule out the plug 100%, if it fires, you probably do need a new magneto since you unhooked the kill wire and still no good.
This vid was legendary guitar dude!! I pulled my carb off last night and after seeing this I'm gonna try to rebuild mine now, wish me luck!!
Glad to help out! I hear ya, i'm sure you'll do fine on it! Thanks for Watching!!!
@@fnaguitarplayer9 she will rip, but I'm having some misses. Gonna swap a new spark plug in today. Do u have a vid talking about timing issues and how to fix them?
@@gsxrJOE92 One video talks about using offset flywheel keys to advance/retard the timing but that would be it, i can't remember if its a separate video or one of the 2 rebuild videos of this engine. Thats the only way to set the timing on these. If the coil is weak it can act up and cause it run bad, especially at higher rpms.
What do I do if I got water in my carburetor. I can't get my bike to move forward. It idels alright but differently from time to time.
Did you use any gasket sealant/glue for the gasket between the carb and the intake manifold. Your answer would be much appreciated. :D
+Rafael Rumianowski I didn't on this, but you can, just put a thin film on, it will help hold it in place and seal better, but most of the time you can get buy without, especially if your using copper gaskets. Thanks for Watching!!!
nice vids man
I was riding my pocket bike down the street and it just bogged down and wouldn't start up again... it would start then die but wont stay longer than 2 sec... I rode it for like 10 min and just gave out >:P the gas was full and fuel line was on but the gas is like almost 2 months old... do you think that would be the prob?
sounds like the carburetor got some dirt in it, or the valve stuck, the shut off valves on these are known for acting up, first thing i would do is clean the carburetor, i don't think it would be 2 month old gas, i've used 6 month old gas without stabilizer in it in mine before with no problems, with these bikes, its always a carburetor problem haha hope this helps, thanks for watching!!!
Quick question would I be able too sand the inside part of my air filter to fit my carb. Because the air filter rubber part is to small/right to fit . Also nice vid
+nick azero Yeah I don't see why you couldn't, if it doesn't need much taken off, just be sure to clean out the particles, don't want to have any get sucked into the engine. Appreciate that! Thanks for Watching!
Just ordered a performance carb and a new spark plug and new pull start. had in storage for awhile and got it running for a whole 10 seconds then died and had fuel everywhere leaking badly from carb so i re checked carb made sure everything was tight and was but still leaking so i ordered new carb. snapped pullstart on 8th pull lol. you talking about a rocket key?
+John Bess I hear ya! That carb should make a difference. Sounds like the float was sticking in it. haha Got to hate when that happens, never have on my pocket bike yet but i've broke a ton of weedeater ropes! Yeah! Thats what its called i knew it had a name! I've tried one in mine, and it made a difference, but i got the best results with stock timing on mine, some may act different, all engines are different.
Got a question and was hoping somebody could answer it...is there any other way of knowing what cc your bike is besides using the vin number, i tryd looking mine up and couldnt find anything, idk if its a 47cc or 49cc...ty in advance...good video keepem up...
I had to measure the piston in mine when i tore it apart to see what it was. thanks for watching!!!
My pocket bike won’t start I’ve fixed the carb and cleaned it and changed the spark plug it’s not jammed and it started here and there but then stops. New premium gas and the right oil mixture. Any thoughts on helping me get it started???
Its either still a carburetor issue or a spark problem, could be a bad coil cutting out, or a carb issue. Thanks for Watching!!!
soon As My Bike Start Up It try To Take Off Full Speed Without Me Pressing On Gas Any Help ???
There is a adjustment on the side of the carburetor that adjusts the idle speed, put the bike on a stand or block so the back wheel wont' touch the ground, get it running and adjust the screw until it stops spinning, then it should be good to go. If it doesn't want to adjust in the carburetor may need to be cleaned as well, if the mixture isn't right do to dirty jets it will do that as well, but i'd say you can just adjust it. Thanks for Watching!!!
how can you run pocket bike with out battery? if its possible
I'd love to find one of those! it would be a good challenge! I do have a old briggs model 6S, i'll be making a video on it at some point. thanks for watching!
Hello there, got two pocket bikes that I havent used in something like 6 or 7 years. One doesn't start at all, but I have the feeling that the gas filter is all clogged. I'll have a closer look. The other one started really easily, worked like a charm for something like ten minutes then stopped. I remember that the last time I used I had to play with the thing 'flow thingy' which is next to the 'on/off' gas thingy (It know those names in French but not in English, too technical) in order to make it work, and suspected that it was absolutely abnormal without knowing anything about the presence of this overflow. Could this be related or is it pretty much always the carburetor that is the guilty part. Thanks so much for this video, it is gonna help me anyways, I like to dismantle things !
Yeah i'd say flush the fuel system, new filter and clean the carb and it should run. Thanks for Watching!!!
@@fnaguitarplayer9 thanks !!!
thanks for watching!
I tried adjusting the forks and it’s still leaking gas. Do you think it would fix the problem if I bought a new carburetor
Congragulations You Played Yourself yeah a new carb would take care of it, it may just be a bad needle valve on yours. Thanks for watching!!!
I have a blade pocket bike how do i know if it requires oil mixture or straight fuel and if its a 2 or 4 stroke.
+John Bess On some if its a 2 stroke the mixture will be printed / molded into the top of the gas cap, if it says on it then its a 2 stroke, look for a valve cover if it has one it is 4 stroke, and will also have a oil dipstick or plug to put oil in it and another to drain it. If its 2 stroke it will basically only have a carburetor and spark plug, very simple setup. Hope this helps, thanks for watching!!!
must be the magneto. I get most of my parts for these off of ebay or, here lately i've been dealing with scooterparts4less (dotcom) which is a great place, i looked it up on there, and its 20 bucks plus 5 bucks shipping, i'll pm you a link to it...
What brand and model is your bike? it looks just like mine but I have no info on it.
they call it a caglarri pocket bike, i guess thats the brand not really sure. Mine is a 47cc but they also have a 49cc. I can usually find parts on ebay just by typing in 47cc pocketbike. Thanks for Watching!!!
hello I have a 50cc mini moto and the spark plug is working, the carburator is clean the magneto works, but I added way to much oil to petrol and it doent start could that be the problem?
Yeah it can cause hard starting if its excessive, think of it like filling the tank with say diesel instead of gas, thats a extreme case but it is a comparison, since the oil isn't flammable, it just burns along with the gas. Even if it run it would foul the plug really quick with that much oil in it. Thanks for Watching!!!
Where you located
what kind of bike is that I just bought one yesterday that looks identical to that and I'm having the same problem carburetor issues so I was wondering what kind of bike it is so I know what kind of carburetor kit I need to buy
Thomas Nickell it's a mini pocket bike, cagillari, you can usually find parts like on ebay if you like for 47cc or 49cc mini pocket bike. Thanks for watching!!!
Is the noise you breathing or a badass burnout?? I can’t tell
Brand?
When i start mine up it just wants to run at full throttle. I think it's either the throttle sticking or the cut off valve is stuck. any ideas?
+Ryan Knight It sounds like the throttle sticking, probably the plunger, some call it a piston, probably needs taken apart and cleaned real good. Thanks for Watching!!!
ok it requires oil then. thanks kindly for speedy response
+John Bess no problem, glad to help!
Cutting and welding torch cleaners work for carbs
When I turn my mini bike on, and I put the choke thing down , the bike takes off (of course I lift the back so it won't go anywhere) so I have to lift it back up and it stops trying to go and then cuts off, I cleaned the carburetor which helped because I haven't run the bike in over a year, so it wouldn't start at first, but cleaning the carburetor made it start. But it does what I said in the beginning, any advice? Thank you.
I start the bike with the choke up because like I said haven't used it in a year, but once it's warm enough I have to put the choke down(open) , that's when the bike wants to take off by itself I don't even throttle it at all
+xBroWsinG sounds like the carburetor isn't letting enough fuel through and its running to lean, that usually causes one to speed up like that. If you done cleaned it, and still doing it, then I'd say either the needle needs adjusted (the part that goes in the top, there is different settings on it, i've never had to adjust one before) or you may just need a new carburetor, they are pretty cheap on ebay for these. Thanks for Watching!!!
+fnaguitarplayer9 I had to remove it to get the carburetor so I might had put in the needle wrong, thanks for replying man!
I hear ya, it might be jamming or something, it has to go in just right. Its picky haha Your welcome, i always answer back, unless youtube acts up and i don't see it haha
+fnaguitarplayer9 yeah man what about the idle speed adjuster , would that affect it it if it's too tight and it will cause for it to want to run?
Hi ,
My son's bike only runs when choke opened full , when it's closed the bike dies when throttle twisted , is this how they should run ? It's a fun bikes mini dirt bike .
Thanks
@@Desertdog99 my son's leaks loads as well , it's just a new engine but his old one ran the same way with choke fully opened , can't wait to hear how your new carburettor goes , hopefully it solves out problems hahaha thanks .
@@Desertdog99 I found out that when it leaks a load it could be the float has jammed and you just need to tap the carb with a rubber mallet and it should stop if not you would need to reset the float level which you can find a video on how to do it on here .
My mini dirt bike hasn't run for about 2 years and the other day i tried to start it, it started but cut out very shortly, i tried it again and it started then cut out . Today it isn't starting, i cant even hear the exhaust wanting to start. I've looked at loads of different videos and they're not really helping. Does anyone know what to do? I dont know much about mini bikes so i dont want to take it apart too much as i might muck it up. Please help
Jake Rowe Sounds like the carburetor needs cleaned, or the fuel filter is clogged, it should be similar to what i showed in this video, if its not exactly like that, most small engine carburetors are very similar. I'd also suggest checking the float level, if its not set right it will only let a small amount of gas in the bowl and it will run like that as well. I'd also drain any old gas out of it and replace the fuel filter, a bad fuel filter will act like that, to test that, unhook the fuel line from the carburetor, there should be a good amount of fuel flowing through it, if its just a trickle or a few drops, thats probably the problem. Hope this helps, Thanks for Watching!
Thanks for replying, i'll try tomorrow because its to dark.
Jake Rowe your welcome!
Can you tell me why my carb is overflowing? i've bent back the little pin thingy but nothing happened
Jake Rowe If you bent it and it still overflows then you probable have a bad needle or seat, sometimes you can get by with just cleaning the needle, it should have a rubber tip (some have metal tips) just clean that with a clean rag and see if it helps. I always try that first.
Would your float cause your bike to bog out when you rev it because my pocket rocket idles well but as soon as I rev it it cuts out !! Is this a carbureta problem??
owen long It can be, does it flood out or try to lean out, like its running out of fuel? If its leaning out it probably is the float, if its flooding out you may have a clogged air filter or the wrong size jet in it. A weak reed can cause that too. Thanks for Watching!!!
ok thx
owen long your welcome
Same thing is happening with mine. Find a fix yet?
+airflight767 na I gave up on it just sitting in the back of the shop
Can you please help me my fuel switch valve is loose and gas leaks out of it. I need help how to fix it?
victor VP You will probably have to replace it, they are bad about leaking, I've never had any problem out of mine but if you look up pocket bike fuel valve you should be able to find it, it should bolt up, and the fuel line slides over it with a clamp. Hope this helps, Thanks for Watching!!!
thanks
victor VP your welcome!
Help, my pocket bike runs and revs but will not move. The chain doesn’t move either, Any help??
Sounds like your clutch is bad, its fairly simple to replace. I have videos on how to do it. Thanks for Watching!!!
lmao those frogs sound huge...
+XxMiDNiTERxXAoD ! haha yeah, they are small just a ton of them haha Thanks for Watching!!!
Can you help please me how to reinstall the wires on the pocket bike????
On the bikes like mine there is only one wire that runs from the coil and goes to the shut off switch, nothing in between, if its a bigger bike with all the lights and stuff you would have to find a schematic/wiring diagram for it. Thanks for Watching!!!
why does the idle speed matter? im asking cause i wanna make sure im takin good care of my bike
These pockets will only idle so slow anyways, i adjust mine so it will stay running, if its to slow it won't cool as well either since these are air cooled, and if its idling to fast, then the clutch will engage and it will take off when you start it, with the back wheel propped up off the ground, get it running, turn the screw until the wheel starts spinning, then back it off between where it stops spinning and before it stops running, and adjust to what sounds/feels right to you. There is a certain RPM listed for these, but i'd say in the middle of those 2 is where it should be, thats the easiest way i can describe it. Thanks for Watching!!!
ok thanks mayn and i took off the cap for my forks because i messed up the handlebar taking it off and found out the RIGHT way to do it to put a NEW one on so should i buy a new handlebar or try to fix the one i have? its not perfectly rounded anymore to fit snuggly on The fork like it has flat spots. and another question i have is when i took the cap off the forks i was looking away at the handlebar and out of the corner of my eye all of a sudden two rings like a quarter inch think fell off and i was thinking they go between the cap and the bearings but when i put the top one on i cant fit the bottom between the bottom bracket that holds the forks together idk what the right term at the moment is but hopefully you know what im talking about and i cant find any videos or information about the assembly of the forks on the pocketbikes so could you help me out please any information is appreciated. I originaly took the handle bar off 'cause it was my cousins and it had flat spots so i messed it up even more bending it to get it off like a dumb mf lol and i was looking at it today and was like ohhhhhhhh*facepalm*
hi can you help me
whenever i start my pocketbike it goes crazy and starts flying forward without my even pulling the throttle
how do i fix this
thanks
sounds like the throttle may have stuck, i would suggest unscrewing the throttle at the top of the carburetor and reinstall it. you can look inside the carburetor through the intake and see if its moving up and down. Thanks for Watching!!!
Thanks so much for the reply
Ash Milad
your welcome!
you should do a vid on how to properly setup your brake system disc brakes.
+John Bess I'll put it on the list, I've never had any problems with mine, but it would make a good video.
Yeah mine rub and i have tried everything even bought new discs. I think there just junk
+John Bess sounds like it needs to be loosened up some, if i remember correctly there is adjustment where the cable goes to it.
Front is a single thumb adjuster and rear is 2 single adjustments that use a allen wrench. Hope that makes sense lol
Yeah it does haha I'd say just try adjusting them out about a turn and see what it does, it should start to loosen up after a turn or 2 i'd say.
what if we dont have carb cleaner..
My pocketbike is leaking some oil. The bike runs perfect but I don't know why is leaking. Please help.
If it s a 2 cycle you may have to much oil in the gas making the unburnt oil leak out the exhaust, if its a 4 cycle you may need a gasket on the crankcase or crankshaft seals are bad. Thanks for Watching!!!
Can a overflow problem stop a engine from starting?
Yes, it definitely can, even if its not overflowing at the moment, the engine may be flooded to where it won't want to start, after you fix the overflow problem, remove the spark plug, and while not standing facing the hole, crank it over, gas will spray out so be careful of that, easy to start a fire or get gas in your eyes. then it should start fairly easily after putting the plug back in. Thanks for Watching!!!
Y'all, before you do this if you want to keep your gas thats in the tank just set the fuel tap to OFF and unscrew the two screws that attach the tap to the carb (be careful not to loose the black seal in the middle of the tap) and remove the tap and gas line and then take off the carb :)
***** that would work too, didn't think about that. thanks for watching!!!
A lot of fuel is getting out through my carburetor.. help?
If its pouring out when its not running, then your float is probably stuck. if its spraying fuel out while its running then i'd say it running to rich. Thanks for Watching!!!
My chain keeps falling of at high rpm plz help
Bashdar Kader Probably just needs tightened up, if it keeps working loose after tightening then the adjusters probably need replaced or you have a froze link in the chain causing it or a bad / worn sprocket(s). Thanks for Watching!!!
show a video on how to make your mini moto faster
I'll try to later on, i kind of gotten away from it for a while. I might get into another modifying mood one day though! Thanks for Watching!!!
its ok fella do it when ever
will do!
Would u be able to do this job for me
I am currently not doing side work, Thanks for Watching!!!
My pocket bike isnt starting and when it used to start it leaked petrol so i took it to my mechanic and he said i need a new carburetor
It probably just needs cleaned if its been sitting for a while, alot of times the gas in the bowl will gum up and cause the jet to clog up. And the problem with it leaking fuel is probably from the float issue i talked about in the video. But for the price, a new carburetor may be easier/faster for you. thanks for watching!!!
Go one liltle big mored that one miny bike to got like 5 year got no used my friend tell me need to put something the motor be f stared it don't now what can do to i can stared no broke the motor thing can do i now I need battery oready battery put charge it nothing happens let me now thank s much you video
Why does my pocket bike take off full throttle when I start it
Stuck throttle
+ryan milflores like the other comment, its probably just a stuck throttle, could be several causes though either a rusted up cable or the plunger got stuck in the carb. Thanks for Watching!!!
Like
Thanks for Watching!!!
that is the tuning screw not the idle screw
historyskyz It adjusts idle speed, if you take it apart you can see that it touches the plunger in the carburetor. It acts like a mixture screw since you adjust the idle. Other ones could be different though, hard to say. Thanks for Watching!
oh sorry on my pocket bike if i turn it to the right it's for top speed and if i loosen it i'd get more torque for acceleration, theres also another small screw for the idle which just pushes the plastic piece that holds the throttle cable in more
historyskyz Your fine! I wish mine had that, it would be nice to be able to tune it, on mine you have to adjust the needle on the plunger part and/or change out the jet.
hey bro can u just message me
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