Gt125r problem with it running

[Damian butler]

Hi i have a 08 125gtr i had carbs cleaned and fitted new fuel pipes but it runs but when the revs go low it dies and have to start it again any help would be appreciated thanks

[♠️ M77]

It sounds like it was hunting for fuel then couldn’t maintain idle then died off ?

I would  not advise this === but does it idle at 4,000 revs on choke or what is the max revs the bike can idle on choke ?  (Don’t run choke for more than 5-10mins) as not to cook the bike up.

Before we touch other parts, lets look at the carb again , lots questions below but don’t panic  (some of them have answers/tutorials in other threads on this forum)

1. Pilot Jets = What size ? Did you clean them again? Could you see though them?
2. Did you “air compressor” the permanent jet that is in the carb (it also controls starting)(Can’t be removed but blow air through it to clean it)
3. Main Jets ? what sizes?
4. Mixtures?   How many full turns ?  Still OEM ?  (I hope it is OEM otherwise it will be an abyss!)
5. Float height ?   (If its off, the pilots won’t reach the fuel before the floats close too early because height is too small)
6. Cleaning the carbs => Did you replace the “float seat gold and float needle” , as they directly control how much fuel comes in and do they still have their “MESH” protectors ?   (have to remove the gold seat to actually see it)

[Damian butler]

Thanks for your help ill take them apart and check all the jets and things as they was done in a garage not by myself but thanks for the info marcel much appreciated

[Author]

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[Damian butler]

Hi i have a 08 125gtr i had carbs cleaned and fitted new fuel pipes but it runs but when the revs go low it dies and have to start it again any help would be appreciated thanks

[♠️ M77]

It sounds like it was hunting for fuel then couldn’t maintain idle then died off ?

I would  not advise this === but does it idle at 4,000 revs on choke or what is the max revs the bike can idle on choke ?  (Don’t run choke for more than 5-10mins) as not to cook the bike up.

Before we touch other parts, lets look at the carb again , lots questions below but don’t panic  (some of them have answers/tutorials in other threads on this forum)

1. Pilot Jets = What size ? Did you clean them again? Could you see though them?
2. Did you “air compressor” the permanent jet that is in the carb (it also controls starting)(Can’t be removed but blow air through it to clean it)
3. Main Jets ? what sizes?
4. Mixtures?   How many full turns ?  Still OEM ?  (I hope it is OEM otherwise it will be an abyss!)
5. Float height ?   (If its off, the pilots won’t reach the fuel before the floats close too early because height is too small)
6. Cleaning the carbs => Did you replace the “float seat gold and float needle” , as they directly control how much fuel comes in and do they still have their “MESH” protectors ?   (have to remove the gold seat to actually see it)

[Damian butler]

Thanks for your help ill take them apart and check all the jets and things as they was done in a garage not by myself but thanks for the info marcel much appreciated

[Author]

Posts