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  #1  
Old 08-25-2007, 02:14 AM
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Default 03 250f problems.

it wont idle at all. i checked out the carb. and cleaned it was good. when i get it started i have to give it gas and then it will idle if it is idle up super high but then it dies when i turn it on. there is also oil coming out of the exhaust when running.is it the rings or do you think it is a gasket around valves or something thats letting the oil up there. is it dying because the oil is passing through and getting on the spark plug and killing it. help me out. what do i need to do.
brett
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Old 08-25-2007, 07:52 AM
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Default Re: 03 250f problems.

Quote:
Originally Posted by brett8686 View Post
there is also oil coming out of the exhaust when running.
Never a good sign when talking about a thumper. Obviously oil is getting into the cylinder somehow. It could be from many causes but you'll have to pull the top end apart to see where the problem is.
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Old 08-25-2007, 10:47 AM
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Default Re: 03 250f problems.

is it worth taking to a dealer to diagnose or should i do it myself. i dont know much about valves. i am use to 2 stroke and have never taken apart a 4 stroke
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Old 08-28-2007, 02:39 PM
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Default Re: 03 250f problems.

If you've ever replaced your own 2 stroke piston, then I see no reason why you couldn't pull the cylinder head off yourself to take a peek and see what's leaking. Your 250 motor uses the same genesis head design as the 426&450. Thus, look over my teardown and rebuild guide in the 4 stroke general knowledge base forum and see if you want to take a crack at it. I just tore my son's bike down over the weekend and that was only the 2nd time ever doing it, although I've figured out some tricks this time that made it a bit easier. It's just more time consuming than anything. About 5hrs on mine to tear down and 3 for my 16 yr old son's with him turning the wrenches and me guiding him. Reassembly will obviously take another full day and the clean up of the torn down parts gets done while your waiting for the new parts to come in. Either way, I guess you'll have to weigh your time and skill with the cost of a dealer's hourly rate plus parts and the dealers honesty.

Later,

Brian

Quote:
Originally Posted by brett8686 View Post
is it worth taking to a dealer to diagnose or should i do it myself. i dont know much about valves. i am use to 2 stroke and have never taken apart a 4 stroke
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Old 08-29-2007, 05:40 AM
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looky here Re: 03 250f problems.

took it apart today and it was just the head gasket, it was some good news. the valves were within specs and the the head wasnt warped. i had a friend help, not to bad to do. thanks for the input that fourm helped alot. it is still not idling well at all. only with the idle up high will it stay running. cleaned up the carb a little. i dont know. i might just have a carb tune up done at the dealership. they said it would be like 100 bucks. thanks again.
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Old 08-30-2007, 11:06 AM
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Default Re: 03 250f problems.

Glad to hear you got the motor worked out with some the help from your friend. Not sure what you mean by cleaning up the carb a little, but if you could fix the motor, I'm sure the carb would be no problem either. Pulling the bowl, cleaning the jets (Particularly the Pilot jet in your case) and setting your float level should get things started. Once you've done that, try adjusting your fuel mixture (Pilot) screw to smooth things out at idle. Additionally, there's loads of Carb Tuning info in the knowledge base forum for your reading pleasure.

Good Luck,

Brian

Quote:
Originally Posted by brett8686 View Post
took it apart today and it was just the head gasket, it was some good news. the valves were within specs and the the head wasnt warped. i had a friend help, not to bad to do. thanks for the input that fourm helped alot. it is still not idling well at all. only with the idle up high will it stay running. cleaned up the carb a little. i dont know. i might just have a carb tune up done at the dealership. they said it would be like 100 bucks. thanks again.
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