Why does my scooter suddenly decelerate and stop when I'm going uphill?

by Lina

I have a Yamaha Aerox 50cc scooter... the engine still runs but the scooter just stops when going uphill (this has happened on flat planes too but usually I just accelerate a few times and the scooter starts moving, but this was not the case when going uphill).

Can you tell me what might be happening and how I would go about fixing this?

Comments for Why does my scooter suddenly decelerate and stop when I'm going uphill?

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Sep 06, 2017
Valves NEW
by: Ed

Open up the valves to 0.005 it's like the thickness of an aluminum soda can the valves are in the front underneath the cover of the Motorhead

Nov 14, 2016
this was my problem NEW
by: bobby malta

this was my problem too until i changed the vacuum pipe and sparkplug,,,,,now running smootly

Jul 19, 2016
Scooter losing power up hill/straight away NEW
by: Jimmy

Scooter losing power up hill/straight away. My scooter starts fine runs fine until I get up to top speed then it just dies, it don't cut off but I come to almost a stop then hit the gas and it goes again, Answer is Weak torque spring in rear clutch bell. If ya scooter wheel turns rather fast while at idle, Its ya spring :P

Aug 22, 2015
my sooter has no power NEW
by: morne

Hi ihaf a kazuma 125 wen I start it it starts but it wants to die so I had to hold the trotel but wen I am on it and want to go it has no power on pul away I had to help it to get it to move a little pls help

May 27, 2015
Scooter runing trouble NEW
by: Scooter#3

I have a 2014 scooter i got used, and it
will take of good, then as it gets up to speed, it starts slowing down all the way to almost pretty much a stop and dies. Then takes a minute to restart, just for it to do the same thing. I honestly dont know why its doing that. I just want advice for what it could be.

Oct 22, 2014
low speed NEW
by: Anonymous

my tao tao did the same thing when i got it. After a little searching I found it was vapor locking. I drilled a very small hole in the gas cap and always loosen and retighten the cap every day before riding. Never had the problem again.

Jul 25, 2014
idle NEW
by: Anonymous

either you have water in your tank. Or you need to up your idle.

Jun 08, 2014
vuka xl110 NEW
by: jay-jay

Myns is almost the same ! Its cuts out while driving !.but bcause I'm in a gear it trys 2 kickstart...but its dies!if I accelarate while this is happening it backfires loudly ..if not it just dies!...then it takes a while 2 start again ! Recently it happened and it doesent wanna start anymore

Sep 27, 2012
by: scooter b

i have the same problem. if i ride for awhile it will start to slow down , then i have to almost stop before i can get going again . wish someone could tell us. my scooter is fairly new and it has some upgraded part like ignition wire and new race cdi. HELP!!!

Apr 14, 2012
What is the solution to this problem? NEW
by: Asa

did anyone find a solution to this problem? I've recently run into the same problem with my new scooter. Help!

Mar 26, 2012
figured it out! NEW
by: Anonymous7

I took my yamaha aerox to a mechanic in the end and it turns out the rear disc break and break pads need changing

Mar 26, 2012
Me too! NEW
by: Anonymous

I'd like to hear the answer to this! I have a brand new 2011 Jonway Neo; it only has 20 miles on it and this same thing is happening!

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