Questions & Answers for: yz 250 rich starting

...yz 250 that when you start it it runs great for a while then it dies plug all coked up it has had carb check and had new piston and rings put a new plug in and she is fine then it happens again i an ...

My son's YZ125 was running great and now we can't get it to kick start. He is new to this bike so I am wondering if the bike ran rich and fouled the plug. Pull the plug and then kick it over if there ...

YZ 125 and there is an oil and gas mixture coming offf the over flow tube where the exhaust goes into the block. Just had the oil changed and the oil plug replaced. The bike is running rich and my son

quad keeps goin through spark plugs hi my yamaha blaster will run for few days then when i start it the following day it will go for 10min then stop i remove the spark plug it is black an sometimes ...

...yz 250 won't start i have a a yz 250 that i was having problems with it needed new reed valves witch i replaced and it ran great then the plug went bad after half an hour. so we put a hotter plug in ...

YZ250F is back firing when let off the throttle. Would hot start sticking cause this problem? no buddy your mixture is too rich which means to much fuel is going in and not enough being burnt so the ...

...yz 250 it will not start when cold I can give it a shot of gas in the air box and it fires rite up and will restart as long as its warm and runs great but will not once its cooled down I'm getting ...

...starting hard and Idling problem sounds like carb needs cleaning. If this bike has moved from a different area it might need different jets in the carb. I might have jumped the gun the gas/oil mix ...

pipe is getting red hot They will on start up, especially with the choke on, because it gives more fuel. If it does it with the ckoke off, you may be too rich on the jetting.

...yz 250 starts and idles but runs rich and bogs as soon as the throttle is applied the bike was running fine but it started bogging really bad and dying. it would start and run fine again for a little ...