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Discussion Starter #1
Hi,

Just taken out my 2003 ktm 660. Worked out there is a fine art to kicking it over.

Anyway yesss problems already.

Massive pops on throttle off decel.

Very jerky at low revs.

Kept cutting out when slowing down to a stop.

Fuel kept leaking out of the carb overflow.

I have a little knowledge and seems to be a float issue first off.
Think the pilot jet needs looking at and fuel/air mixture screw settings.

Also the idle adjustment is seriously hard to turn and doesn't seem to change anything at all anyway even with big turns.

Any input would seriously be appreciated only done twenty miles of stop start kicking over driving.

O also it had a full engine rebuild 100ish miles ago.

Thanks

Adam
 

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Popping means it’s lean
poss air leak or blocked jet
leaking fuel is a float issue possible needle seat shitty

i would suggest a carb strip and rebuild
dont keep riding it like that as it will run hot and damage the piston
 

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Popping means it’s lean
poss air leak or blocked jet
leaking fuel is a float issue possible needle seat shitty

i would suggest a carb strip and rebuild
dont keep riding it like that as it will run hot and damage the piston

Where are .you based
 

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Discussion Starter #4
Oxfordshire mate.

Yea cheers I'll start ordering bits. Might try get a jet kit, or get it running the dyno it. I knew I would have to take the carb off to clean it, rebuild it etc.
The leaking was a constant flow with the bike on the stand. When stood straight it would just drip.
 

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Discussion Starter #5
Just pulled the carb. The fuel mixture screw is completely missing. No wonder I couldnt get it to idle.
Also with the float needle fully pushed in air blown down the inlet pipe still escapes so I need to change that.
 

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I’m amazed you got it started
 

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Discussion Starter #7
Me too. I did have to keep the reevs really high, so me doing that must have taken fuel/mixture screw and pilot jet out of the circuit straight away going straight to the main jet keeping it running. That's my theory probably wrong.

I have a mj 175
Pilot 45
 
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