Hi Robot. Love the vid's. Been in love with ET4's for about 12 years and never had so much fun with them as now = after seeing the videos. Really valuable and has enabled me to keep 3 ET4's running which would've all otherwise have been used for parts or scrapped. Bravo for helping to keep a part of scooter history alive.
You mentioned that when the scooter warms up then it stalls. I have a 50cc scooter which does the same thing. when it gets warm then sometimes it stalls when I come to a stop. When I start it back up it does not stay on unless I keep revving the engine. Which screw should I adjust?
Thank you for this! My 2006 Bv250 was idling low. Fixed it! Question - it cranks oner and over again and doesn't turn over. I have to go back to it after 10 minutes or and it will start. Any help is appreciated!!
I am LX with the same carburetor. But after cleaning the carburetor, the engine sometimes starts and sometimes doesn't. Of course, the spark plug was also replaced. As for the service center, the spark plug is wet, so it may not start. Will adjusting the pilot screw solve the problem?
Do you think the warm idle issue could be spark plug related or is it mostly just the clogged idle jet? I bought a used vespa GTS 250 2006 4 weeks ago and it's started to cut out if I stop then start whilst warm, such as going for food shop or stopping for petrol. Today it fully broke down at a crossroads I had to wait 1 hour until it was cold and would start, then I made sure I never let the engine idle at junctions until I got home I kept the revs up a little bit and it was absolutely fine. Is it dangerous? The garage can't fit me in for 3 weeks. It's fine from cold start first thing in the morning
I have a TPS on mine and been trying for 2 days to get it to run correctly, I can't find any info' on the TPS but when you unplug it the engine revs up and 'hunts'. Anyone got info'?
Hi! i found ur video very useful. thanks for that. i just want to ask a question where i can buy, diaphragm spring holder, its a white plastic with 4 prongs, which holds the spring and diaphragm. also thats it affect the accelation if you dont have it? i guess the previos owner played with it but unable to put it back together. i just cleaned my vespa LX150 carburator by watching ur video, i have 358 miles on it, it has a good idle, but it kind of rough on accelaration, it doest reach more than 30mph, and started to vibrate. can i have ur expert opinion, i dont want to bring to the shop and rip me off with charges. thanks.
Hi Robot. So what's the proper idle adjustment approach for a scooter that won't idle when warm? How does one approach this when it won't keep running to make adjustments? Idle screw first, then mixture? Other way around? Etc... Note that the carb was recently rebuilt... professionally...but it's a 2+ hour highway drive to take it back to them, I don't wanna do that. Thanks.
My BV 250 is getting a very bad gas mileage, like 28 mpg. New intake manifold, valves adjusted, clean carb, clean air filter also. Idle is good at +-1650 RPM, runs fine and strong, only problem is this terrible gas mileage. Already looked for leaks, but found nothing. Really disapointed about this. Don´t know what else can it be.
I have a piaggio fly 50 4T year 2009. After the winter break with some old petrol in the tank at cold start it was 2 minutes idling but when I try to accelerate it dies. After a series of starts and removing the old gasoline, they can accelerate without dying and after a few kilometers on the road (with the engine warm) at idle it stops immediately and I can start it, but only accelerated to maximum or otherwise it does not start. Do you think there is a problem?
Hello, my kid have a piaggio fly 50cc 4 stroke. When standing still on idle, the clutch/ cvt engages and drag the scooter slowely forward. Du you thing the problem could be to high idle or problems with the cvt? Thanks, Vidar- Norway
Hi Robot! I own 2 Vespa's (2 and 4 stroke) and now a Liberty 125cc just for commuting! She has done 5700 miles and is a 2006 model! Rides fine but is a bit slow off the lights! Once up and running accelerates as a 125 should, but it is just that initial off the lights acceleration I need! Any tips? Regards
I wish the old Flys made it this easy to access the fuel/air screw you have to disassemble the entire back end just to get the seat bucket all the way off, super annoying
hi...i have a gilera runner 200st 4t scooter with the same piaggio 200 4t motor...the carburator is the keihin cvk30...how many turns out of the fuel screw is the right adjustment of my carb? Now i am set at 2 turns out from the bottom? My mixture is right at this position? Its lean or rich?
Hi, thanks a lot for making these videos! I have a question. My Vespa runns fine if I ride it every day, but when I don’t use it for a week, then I have a hard time starting it for the first time. What might be the cause of that? It has a caruburettor like the one in your video.
Quick question about the electric choke. Does that begin to warm when the key is turned to the on position or only when cranking and/or startup and beginning idle. Thanks! (2001 ET4 150)
Hey Robot! Thanks for the great videos! I have a 2008 piaggio 150 fly At 55 mph it shuts off until it slows to 50 then will pick back up.. Would this be a carburetor issue? Runs great until this speed.
Hello Robot, I like your video. The Vespa 150 I am working on is bogging down at exactly 20-25 miles/hr. The carb is clean , the air filter is clean, plenty of gas. I did buy also an electric chocke from you guys, thinking that maybe the old one is bad and would affect the gas supply. Still, is bogging down at 20-25 miles/hr. Any suggestion? If I cover the air intake, to flood the carburetor, is reeving up well.
bonjour mon probleme de carburation est le suivant , je fait un super réglage du carburateur sur vespa 125S DE 2007 et une fois fini je le descend de la béquille et le régime change complètement voir meme arrête le moteur je n arrive pas s trouver le probleme j ai nettoyer le carburateur plusieur fois mais rien n a changer quelqu un a une piste merci....
Just a quick question my et2 carburettor revs very high at first start and then goes normal and later goes off if I don’t rev but was thinking of upgrading my carburettor plz advise robot plz
Yeah did a deep a time ago where I took off all the carburettor and wash it up in petrol put if back together and it was fine for a while then it started the same thing over again and also if you don’t mind my et2 has got no button start I always have to use the foot starter but I would like to fix one on it how do I go about it thanks for the reply
Hi, I have a 2012 50cc 4T 4V Piaggio Vespa LX50. It stalls out when warm, get's worse the hotter it gets. It has 18.000km on it and has been running GOOD. I decided to do some servce change the spark plug, the air filter and also installed a bigger main jet, (77). Immediately after it started top develop these problems, cutting out at stoplights and just does not want to idle when warm. I started with checking vacuum leaks, but it seems ok, no fuel in the vacuum line to the manifold (I am ordering a new manifold as its old) I have cleaned the idle jet its completely clear, didn't help. I then removed the 77 jet and installed the Original one. I then checked if the spark plug was lose and it was not, so I removed it and it was black, so it seems I am running rich. I tried adjusting the mixture, going all the way in and then 1.5 turns out but it still did not help. Any ideas?
@@carlitos305way Dont get me started... I continued to work on the Vespa until it decided not to start at all. -replaced the intake pipe -replaced the carburetor -replaced the CDI (with a Malossi performance unit) -replaced the fuel pump and lines -replaced the spark plug cap -removed and then replaced the air filter Still no go.. not even with starter fluid. Took the spark plug out and checked the gap, and still no go. Took it to the shop, and they got it going quite quickly. Turned out to be a faulty spark plug wire and they also claimed a faulty spark plug (which I dont believe). Minor costs. Runs so good that I installed a Malossi performance Variator and a new Stator. Goes to 75km/h on the Vespa speedometer. Then bought a 70cc Cylinder kit. Still need to install it though
Excuse my message im a little out of it, but i have to give mine gas hard in order for it to stay on. At first it idels fine, but then it starts to die on me.
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Just adjusted the idle speed on my 2007 LX150-ALL BY MYSELF 😂😂😂. So proud. Thanks for the great videos!
Hi Robot. Love the vid's. Been in love with ET4's for about 12 years and never had so much fun with them as now = after seeing the videos. Really valuable and has enabled me to keep 3 ET4's running which would've all otherwise have been used for parts or scrapped. Bravo for helping to keep a part of scooter history alive.
Thanks, Robot. Have a 2008 lx 50 4t, runs great, but enjoy the 50 videos.
Thank you so much for all your education videos! I always learn so much from you!!
You are so welcome!
My Vespa SXL 150 got a humming sound while throttling I think I understood what to check. Thanks . ❤️❤️❤️❤️❤️
Most excellent Video.. You are Awesome!
I appreciate that!
Legend!
You mentioned that when the scooter warms up then it stalls.
I have a 50cc scooter which does the same thing. when it gets warm then sometimes it stalls when I come to a stop. When I start it back up it does not stay on unless I keep revving the engine. Which screw should I adjust?
I AM VERY ENJOY THE VIDEOS ! THANK YOU -----ROBOT!
Thank you for this! My 2006 Bv250 was idling low. Fixed it! Question - it cranks oner and over again and doesn't turn over. I have to go back to it after 10 minutes or and it will start. Any help is appreciated!!
hi robot, do you have any sugestion for the carburator subtitution for the LX 125? is there any subtitution from the japanasse motorcycle. thank
I am LX with the same carburetor. But after cleaning the carburetor, the engine sometimes starts and sometimes doesn't. Of course, the spark plug was also replaced. As for the service center, the spark plug is wet, so it may not start. Will adjusting the pilot screw solve the problem?
Do you think the warm idle issue could be spark plug related or is it mostly just the clogged idle jet? I bought a used vespa GTS 250 2006 4 weeks ago and it's started to cut out if I stop then start whilst warm, such as going for food shop or stopping for petrol. Today it fully broke down at a crossroads I had to wait 1 hour until it was cold and would start, then I made sure I never let the engine idle at junctions until I got home I kept the revs up a little bit and it was absolutely fine. Is it dangerous? The garage can't fit me in for 3 weeks. It's fine from cold start first thing in the morning
I have a TPS on mine and been trying for 2 days to get it to run correctly, I can't find any info' on the TPS but when you unplug it the engine revs up and 'hunts'. Anyone got info'?
Hi! i found ur video very useful. thanks for that.
i just want to ask a question where i can buy, diaphragm spring holder, its a white plastic with 4 prongs, which holds the spring and diaphragm. also thats it affect the accelation if you dont have it? i guess the previos owner played with it but unable to put it back together. i just cleaned my vespa LX150 carburator by watching ur video, i have 358 miles on it, it has a good idle, but it kind of rough on accelaration, it doest reach more than 30mph, and started to vibrate. can i have ur expert opinion, i dont want to bring to the shop and rip me off with charges. thanks.
Thanks Robot super super interesting thankyou 😊🌈 Andrew UK
Hi Robot.
So what's the proper idle adjustment approach for a scooter that won't idle when warm? How does one approach this when it won't keep running to make adjustments? Idle screw first, then mixture? Other way around? Etc...
Note that the carb was recently rebuilt... professionally...but it's a 2+ hour highway drive to take it back to them, I don't wanna do that.
Thanks.
My BV 250 is getting a very bad gas mileage, like 28 mpg. New intake manifold, valves adjusted, clean carb, clean air filter also. Idle is good at +-1650 RPM, runs fine and strong, only problem is this terrible gas mileage. Already looked for leaks, but found nothing. Really disapointed about this. Don´t know what else can it be.
hello, I cleaned the 4t GY-6 carburetor and my engine oscillates at the first start! why? Thanks
Could you better point out where the mixture screw is on 4 stroke lx 50. Watched felt used mirror. Still can’t find it. Thanks
I have a piaggio fly 50 4T year 2009. After the winter break with some old petrol in the tank at cold start it was 2 minutes idling but
when I try to accelerate it dies. After a series of starts and removing the old gasoline, they can accelerate without dying and
after a few kilometers on the road (with the engine warm) at idle it stops immediately and I can start it, but only accelerated to maximum or otherwise it does not start.
Do you think there is a problem?
My intake is cracked. Need a new one. I just replaced coil/wire. It was broken. Thanks!
Hello, my kid have a piaggio fly 50cc 4 stroke. When standing still on idle, the clutch/ cvt engages and drag the scooter slowely forward. Du you thing the problem could be to high idle or problems with the cvt? Thanks, Vidar- Norway
Hi Robot! I own 2 Vespa's (2 and 4 stroke) and now a Liberty 125cc just for commuting! She has done 5700 miles and is a 2006 model! Rides fine but is a bit slow off the lights! Once up and running accelerates as a 125 should, but it is just that initial off the lights acceleration I need! Any tips? Regards
I wish the old Flys made it this easy to access the fuel/air screw you have to disassemble the entire back end just to get the seat bucket all the way off, super annoying
My sym 150cc is not running like it was before can you help me
hi...i have a gilera runner 200st 4t scooter with the same piaggio 200 4t motor...the carburator is the keihin cvk30...how many turns out of the fuel screw is the right adjustment of my carb? Now i am set at 2 turns out from the bottom? My mixture is right at this position? Its lean or rich?
Hi, thanks a lot for making these videos!
I have a question.
My Vespa runns fine if I ride it every day, but when I don’t use it for a week, then I have a hard time starting it for the first time.
What might be the cause of that?
It has a caruburettor like the one in your video.
It's normal for a carburator, because you have to get fuel in it before starting after being unused for some days
spark plug is black do you do it in or out
Quick question about the electric choke. Does that begin to warm when the key is turned to the on position or only when cranking and/or startup and beginning idle. Thanks! (2001 ET4 150)
Great video, Robot! One thing - is a "turn" 180 degrees or 360 degrees? I assume 360.....?
Hey Robot! Thanks for the great videos! I have a 2008 piaggio 150 fly At 55 mph it shuts off until it slows to 50 then will pick back up.. Would this be a carburetor issue? Runs great until this speed.
petcock?
Hello Robot, I like your video. The Vespa 150 I am working on is bogging down at exactly 20-25 miles/hr. The carb is clean , the air filter is clean, plenty of gas. I did buy also an electric chocke from you guys, thinking that maybe the old one is bad and would affect the gas supply. Still, is bogging down at 20-25 miles/hr. Any suggestion? If I cover the air intake, to flood the carburetor, is reeving up well.
try putting some grease on the lip of the diaphragm and re-seating it.
Hi... can you make a video (Tutorial) how to change Throttle Cable Open and Close for Vespa LX150. Most Appreciate...
bonjour mon probleme de carburation est le suivant , je fait un super réglage du carburateur sur vespa 125S DE 2007 et une fois fini je le descend de la béquille et le régime change complètement voir meme arrête le moteur je n arrive pas s trouver le probleme j ai nettoyer le carburateur plusieur fois mais rien n a changer quelqu un a une piste merci....
Just a quick question my et2 carburettor revs very high at first start and then goes normal and later goes off if I don’t rev but was thinking of upgrading my carburettor plz advise robot plz
Have you done a deep clean? Sounds like you could have a clogged idle jet? We have several videos covering carb cleans. Thanks!
Yeah did a deep a time ago where I took off all the carburettor and wash it up in petrol put if back together and it was fine for a while then it started the same thing over again and also if you don’t mind my et2 has got no button start I always have to use the foot starter but I would like to fix one on it how do I go about it thanks for the reply
Hi, I have a 2012 50cc 4T 4V Piaggio Vespa LX50. It stalls out when warm, get's worse the hotter it gets. It has 18.000km on it and has been running GOOD. I decided to do some servce change the spark plug, the air filter and also installed a bigger main jet, (77). Immediately after it started top develop these problems, cutting out at stoplights and just does not want to idle when warm.
I started with checking vacuum leaks, but it seems ok, no fuel in the vacuum line to the manifold (I am ordering a new manifold as its old)
I have cleaned the idle jet its completely clear, didn't help.
I then removed the 77 jet and installed the Original one.
I then checked if the spark plug was lose and it was not, so I removed it and it was black, so it seems I am running rich.
I tried adjusting the mixture, going all the way in and then 1.5 turns out but it still did not help.
Any ideas?
Did u figure it out?Im having similar issues if you can help what u figured out I would appreciate it..
I also jetted mine as well and couldn’t get it to run for nothing hoping for any kind of feedback.Thanks
@@carlitos305way Dont get me started... I continued to work on the Vespa until it decided not to start at all.
-replaced the intake pipe
-replaced the carburetor
-replaced the CDI (with a Malossi performance unit)
-replaced the fuel pump and lines
-replaced the spark plug cap
-removed and then replaced the air filter
Still no go.. not even with starter fluid.
Took the spark plug out and checked the gap, and still no go.
Took it to the shop, and they got it going quite quickly.
Turned out to be a faulty spark plug wire and they also claimed a faulty spark plug (which I dont believe). Minor costs.
Runs so good that I installed a Malossi performance Variator and a new Stator.
Goes to 75km/h on the Vespa speedometer.
Then bought a 70cc Cylinder kit. Still need to install it though
Hard starting problems are caused by "this guy" but I can't see what you're pointing to. What needs to be unclogged?
Excuse my message im a little out of it, but i have to give mine gas hard in order for it to stay on. At first it idels fine, but then it starts to die on me.
Excuses me , Why my Vespa dies while riding ?
I have a vespa lx 50 4t 50cc but I have a GY6 carburetor from china and you have something else
Chetak scooter
Hı Robot My Vespa giveing 22 km milage how to set milage
Just completely tight air fuel mixture screw and unscrew to 2.5 turns,,, u can use gel pen refill to turn air fuel mixture screw
Hi mate sent a message on instagram needing help in my lx 125