Questions & Answers for: Yamaha YZ 250 cold start problems

Question about Yamaha YZ 250 Motorcycles

2 Answers

dirt bike thats hard to start.. i have a 1989 yz 250 yamaha.when i try to kick start my bike.all it will do is back fire..**** when i push start it, then it will start and run great.no probelms.then ...

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engine dies, starts right back up then dies, now won't start My 2003 yz 250 runs awesome now when I last rode it would run great then just cut out totally losing all power, then you kick it and it ...

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...start to open her up and it gets to the higher revs it starts to cough and sputter, almost as if I pulled the choke on during acceleration. I have done a comp. test and it was fine-160 P.S.I,my reeds ...

...problems. When trying to start the dirt bike a fine mist of starting fluid must be administered to the carburator or else it will shut off within 10 seconds. I think it maybe a fuel feed problem. Not ...

my yz250f need valve ajustment do you know what my yz250f need valve ajustment do you know what it is Set the intake at .006 and the exhaust at .008. Set when engine is cold.

...start. No problems starting before it ran out. Mix is right, took out plug and cleaned it, still wont start Change your spark plug.You may have got too thick of a mixture at the end of your tank and ...

...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 frustrated I just had ...

Question about 2003 YZ 250

1 Answer

...cold and hot verry hard to start. I would check sthe spark plug gap. Set it to 0.9mm If too close it won't ignite properly also is the exhaust pipe standard? If not the timing and mixture will need ...

Question about 2003 YZ 250

0 Answer

start cold, if warm starts great. need to spray carb clean in air filter when cold to start Hi, 1972gmc for more information about your question and valuable "FREE" downloads that you will need please

...start but as soon as bike warms up fails completely until cold again they even can give false reading when you test to see if spark is at the plug as you see spark but is not strong enough or is ...

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