Archived Scooter Repair Questions

Issues with Running Slow, Bogging Down or Running Rough

On this page, you'll find our scooter repair questions archives, containing questions that past visitors to the site have asked concerning issues with how their scooters run.


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I like to keep the numbers of questions on our current Scooter Answers category pages down to a usable minimum. Too many questions to scan through can be overwhelming. So I've created these archive pages so that you can still find answers to almost any scooter question through search, but the most current (last month's) questions will be easier to scan through and answer or just learn from.

So, this archived scooter questions page is about scooters that don't run right... they slow down, bog down or run rough. If you can't find what you want here, feel free to explore the other archived topics listed here. And actually, the easiest way to find anything in our database of questions and answers is probably to use our site search box:

Archived Questions About Scooters That Run Slow or Bog Down/Run Rough

Click below to see past questions and answers regarding issues about scooters that don't run as they should.

Why is my Bashan 150 Racer scooter stalling? 
My scooter has just broken in and at times at around 55 mph, it starts stalling. I cleaned the fuel filter and ran new gas through the engine. Anyone else …

What can I do to get my used Genuine Buddy 125cc scooter to go up to speed? 
I just purchased a used Genuine Buddy 125cc scooter and I can't get it to go faster than 35 to 40mph, please help. When I test rode the scooter I got it …

What is wrong with my scooter? 
I just bought a used 2008 Vento Triton and it ran great for the first few days. Now it will start up perfectly fine, but whenever it gets above 10mph the …

Why does my XY260t scooter stop running every time I stop? 
Hello to all... My problems with my scooter start in the morning, I spend about 5 minutes to keep the bike running, then every time I stop, the bike turns …

Why won't my Kymco People 150 scooter stay running? 
My Kymco People 150 scooter runs great at full throttle, but when you stop, it dies. I tried turning up the idle, tightening the throttle cable, cleaning …

Why is my scooter only running for a short amount of time? 
I just purchased a Brand New Flyscooters GS125 (Motorcycle/Scooter crossbreed). It is 4 stroke, semi-auto, basically had zero Miles on it. I took it home, …

Why won't my scooter keep running? 
At first the scooter wouldn't even start, but I took the carb off and gave it a good cleaning with carb cleaner, put it back together and she started right …

Why does my Zuma scooter not run right? 
Why after I replaced my clutch on my 50cc Zuma it only has momentum when I have no weight on the back tire? I have made sure everything is tight on the …

Why can I not get any acceleration from my scooter? 
We can start the scooter and rev it as well, but there is no acceleration from the bike and you have to push it to go. Any ideas what might be wrong …

Why does my scooter slowly stop running? 
I have a 50cc TaoTao scooter; it will start and run fine for a bit, then just starts losing power and shuts off. If I let it sit, then it will start fine …

Why does scooter die after full throttle for a minute or two? 
I have a 2000 Honda Scoopy 49cc scooter. Starts first time every time. It runs good when throttling up. If I ride it at full throttle for about a minute …

Why does my Honda Elite stop running shortly after I start it? 
I have a Honda elite 250 (ch250) I believe the by starter is shot. It will start when I cover the air intake, but dies shortly after. I can cover the air …

Why does my moped start and then dies even when I pull on throttle? 
When I try to start my scooter, I get it started... but when it starts, it seems as though it just idles for a while and then dies. It seems as though …

Why is my scooter running slow? 
There is a hose that is sucking in air that is not connected to any part of the scooter that possibly happened during the crash from the guy I bought it …

Why does my Piaggio run until i stop at a junction then just idles? 
My Piaggio Sfera 50cc starts OK and runs fine until I stop at traffic lights or a junction, then when I go to pull away, nothing happens - the idle stays …

Why does my 50cc Peace scooter bog down when I give it gas? 
When I kick start my Peace scooter, it will run, then cut off. Then it will take about 30min to get it started, but though it starts back up, when I give …

Can you explain why/where to look when a Xingyue Xy260T-4 loses top speed? 
I have a 2008 Xingyue XY260T-4 with 4300 miles. It ran 70 mph when new, then one day dropped top speed to 55 mph @5200rpm and 40-45 mph top speed going …

Why is my Buddy 150 scooter crapping out around town? 
I have a Buddy 150 scooter that I don't ride as often as I'd like. It has started "crapping" out and on the way home the other day died a couple of times. …

Is this normal during the scooter break in period? 
I have a newly bought Honda Beat scooter; every time I use my scooter, usually while running at steady speed (40 to 60kph), it sometimes loses power for …

Why does my scooter bog when I turn the clutch all the way? 
If I accelerate fully, my scooter will bog and go really slow. I have to accelerate very lightly for it to pick up speed. Also my headlights, horn, …

Why won't my scooter start and idle? 
I recently bought a 150cc moped from a store in CA (shipped from China of course). It has less than 100 miles on it now, but has run very rough from day …

Why does my scooter run fine, but then suddenly dies? 
I have a 50cc scooter that "dies" after running for a brief time. I replaced the CDI and thought I fixed the problem but after riding it for 7 miles, it …

Why does my scooter cut off and not crank? 
My scooter cut off on me going down the road. I give it a little gas and it will crank, but it cuts back off. It will turn over, but will not crank …

Why won't my Tank 150cc scooter stay running? 
I have a Tank 150 Urban Racer scooter (At least that is what I was told it is). I do know it is a Tank 150cc and it has the word Urban down the sides. …

Why can't I keep my Buddy scooter running after it starts?  
I am a scooter novice, so simple responses are appreciated. My Buddy 50cc will start when jumped, and then almost immediately dies. Why? My scooter …

Can you help me figure out why I can't keep my scooter running? 
Hi, name's Dan and I've got a TGB 101s scooter. 2 stroke. She is 2 years old and had to sit for round 12 months. Has run but keeps wanting to stop. …

Can anyone tell me why I am having trouble keeping my Xingyue scooter running? 
My scooter will start but not run, apply gas cuts out. I have a Xingyue XY 150cc, It will start but not run when gas applied or will run for a few blocks …

Why is my scooter bogging down? 
I'm assuming there is something in my tank and or carb as it dies and bogs down very quickly. However if I physically shake the bike it runs fine for a …

Why does my scooter stop when trying to rev? 
I don't know the exact model of my scooter. I got it from my friend and it's been sitting in his garage for a few years. I can get the motor to start, …

Why does my 4 stroke scooter stop running after riding a few minutes? 
My scooter stalls after riding it five min. or so and will not start back up until about 2 hrs later. Sometimes if I ride it and make it to my destination …

Why is my Genuine Buddy 50cc bogging down with a steady open throttle? 
Scooter seems to runs fine, but then bogs down or dies with a wide open throttle. The scooter in question is a 2009 50cc Genuine Buddy with 770 miles. …

Why does my scooter start, but then dies out? 
My scooter starts fine and idles fine, but as soon as I start going, it only lets me get to 20mph, and then bogs down and dies. Any idea what might …

Any idea why my brand new Peace scooter dies when I give it gas? 
I have a brand new Peace 50cc Scooter. It was not started for about a month as I was trying to sell it. I changed the battery so now it cranks. Occasionally …

How do I increase back pressure on a 50cc scooter? 
I added a rag shirt piece on the intake on the carb that will give it enough power to pull its own weight. Then I added a foam round air filter for a motorcycle …

How do you get air in the gas line out on a scooter? 
I have an XG-470 extreme scooter that won't stay running. It's brand new. I think there is air in the gas line. Anyone know how I can get it out?

Why would my scooter be revving up by itself? 
After I start my scooter, it revs up by itself. What is wrong? I have just put a technigas exhaust on my Jollie 50cc...

Why does my scooter cut out when at a complete stop? 
I have a 150cc Yamaha Vino (about three years old) and it starts up just fine and runs as long as you are giving it gas. But when you come to a complete …

Can anyone tell me why my 150 scooter cuts out while riding it? 
I have a 150cc Wildfire touring model 2006. It starts and runs fine and when I go down the road it will be fine for awhile and then all at once it will …

Why is my Xingyue XY260 cutting out or stalling when taking off? 
I have a Xingyue XY260 with about 3000 miles on it. Not always, but sometimes when I am taking off from a complete stop it will cut out having no power. …

What could be keeping my Aero Diamo scooter from running properly? 
My scooter will only run after playing with the air screw every time I start it cold; once it's going it's fine, but I have to do this every time. What's …

Can you help with my 50cc TGB 302 sport cutting out problem? 
I have just had my scooter back on the road after 4 years of standing. About 2 months back, I had a new piston fitted as the other had cracked. The scooter …

Any idea why my scooter keeps stopping? 
I have a new 150cc Chinese scooter. It starts for 4 seconds, then stops. If I give it gas, it stops. Please help! Thanks... Charles

Why does my scooter start/run but not go anywhere? 
My husband has a fairly new 2008 Shenk Scooter or something along those lines! He bought it with 150 miles on it and has since put almost 1100 on it! …

Why won't my Honda Silver wing scooter "shift" when cold? 
I have a 2003 fuel-injected Honda SilverWing scooter with over 41,000 miles on it. I replaced the stock variator with a J Costa about 2 years ago and the …

Why won't my Kymco KB 50 scooter run above idle? 
I have a 2003 Kymco 50 scooter and it has been running fine up until yesterday. My wife and I were out riding and for some reason it just stopped running …

Any idea why my scooter chain and tire don't turn when it is running? 
My scooter starts, runs, and revs but for some reason the chain and tire don't spin. Everything works but my tire is not getting the power. Anybody …

Any idea why my Yamaha Jog scooter won't move after starting? 
My project scooter, a Yamaha Jog, starts but when ridden, does not move, what could be the issue? It starts, when in stand and rear wheel is lifted, the …

Is it normal for a Tomos Nitro to buck and jerk like this? 
I have a Tomos Nitro scooter... It seems and does buck and jerk at low and high speeds even though it is a brand new moped; if I let off the gas it putt-putts... …

Why is my LML scooter 150cc runnning so rough? 
I have put premium petrol in my scooter and its running very rough. Is that common? Or is there another cause?

Any Ideas on Why I Have a Loss of Power After Start Up? 
The scooter is a Honda Helix and the top end has just been rebuilt with new pistons, rings, and gaskets, cylinder bored .5mm. The scooter runs fine when …

Do I Need to Adjust My Carburetor? 
I have 50 miles on my 50cc scooter and all of a sudden it seems like you you grab too much throttle; it peters out. It's like it's not getting any gas. …

Can anyone help with idle circuit on a 1987 Honda 50 nq? 
Honda starts but won't idle. Seems the idle circuit is not functioning but can't find any good schematic showing idle jet. Have cleaned all visible jets …

Scooters Cuts Out While Riding.... 
While operating scooter, it losses throttle and then stalls and a stop... starts right up again. 50cc just serviced, runs great except for this issue …

Why does my scooter start, but stall almost immediately? 
I have a 2006 Vespa LX 50. I can start it (with difficulty), but even when I give it gas, it clunks out. It seems like the gas is not getting through, …

Any idea why my Keeway won't keep running? 
My Keeway scooter Matrix 50cc starts briefly, then stalls. The sparkplug keeps fouling. The carb was removed and was very dirty. I cleaned all passages, …


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ATTENTION! I have had to delete the Scooter Forum for this site, unfortunately. Despite my best efforts, I could not adequately prevent daily attacks by hackers and spammers. Even though most of their posts did not go public, they still cluttered up my website host's server space, jeopardizing my account. I appreciate everyone's contributions over the past few years and I apologize for having to do this.

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