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  #1  
Old 10-10-2017, 06:37 PM
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Default 2004 YZ250F Starting issues

     

I am new to dirtbikes and just traded a quad for an 04 yz250f and cannot get it to start consistently. I've watched numerous videos and everyone seems to have their own method or are just not helpful whatsoever. So hopefully posting on here will help clear up some of my confusion and prevent some further frustration... First of all, what do I feel for in the kick starter? Obviously resistance, but how do I know the piston is at TDC? Will TDC be in the same place in relation to the kick starter every time or does it change depending on how far the kick starter was moved? It's a carbureted engine, so is it better to prime it with a little fuel or not? It also has a compression release and I've seen some differing opinions on how far to press the pedal after releasing compression and how far to bring it back up. Any help is appreciated
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Old 10-11-2017, 09:14 AM
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Have you checked the condition of the carburetor? Have you verified the float height and jetting? Have you checked the valve clearances?
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Old 10-11-2017, 12:28 PM
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The 2004 does not have a compression release, but rather a hot start lever. The hot start lever leans the bike out so it will start after a stall.

Paw Paw
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Old 10-11-2017, 03:24 PM
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It has both. I was told it's a 2004.
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Old 10-11-2017, 03:54 PM
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2001 and 2002 were the only years that this bike had a manual decompression on them. 2003 forward all had auto decompression built into the exhaust cam. So you have either a 2001 or a 2002 or some mix, but not a 2004.
You will need to check the valve clearances. If the intake valves are even .001 too tight it will cause starting issues cold. Also a worn cam chain will do the same thing. A dirty carb and a miss adjusted fuel screw will also cause cold starting problems.

Paw Paw
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Old 10-11-2017, 06:22 PM
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It runs fine, the guy I got it from started it in one kick. I'm just unfamiliar with the procedure for starting it and need better details than I'm finding elsewhere
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Old 10-12-2017, 11:04 PM
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You’ve been given some good advice. Perhaps the guy you got it from already had the bike warmed up and that’s why it started easily.

At any rate, since he knew the proper starting procedure - perhaps you should get a hold of him and have him walk you through it.
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Old 10-13-2017, 06:45 AM
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I've basically figured it out on my own. Thanks for absolutely nothing
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Old 10-13-2017, 09:03 AM
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The point of forums is to share information, not just receive it. So... how about you post the procedure that works so people searching in the future can have the information?
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Old 10-13-2017, 11:49 AM
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Quote:
Originally Posted by The1FinestBean View Post
I've basically figured it out on my own. Thanks for absolutely nothing
Bean,

Please be polite on the site , as we have a good group here that was just trying to help & your response "Thanks for absolutely nothing" was uncalled for!
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Old 10-14-2017, 08:17 AM
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Gusco you are so polite! Kudos for being a good example for the rest of us.

Bean, seeing as we're so useless, good luck next time figuring out "on your own" why it won't start. And believe me, there will be a next time. .and a time after that
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Old 10-17-2017, 08:54 AM
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Quote:
Originally Posted by The1FinestBean View Post
I've basically figured it out on my own. Thanks for absolutely nothing
Thanks for being a whiney little titty baby.
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Old 10-17-2017, 09:18 AM
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Amazing! Isn't it fellas? Someone who cant figure out how to start a dirt bike now needs no help whatsoever!
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Old 10-17-2017, 11:52 AM
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Quote:
Originally Posted by gusco View Post
Amazing! Isn't it fellas? Someone who cant figure out how to start a dirt bike now needs no help whatsoever!
Well that probably whats going to happen on this site!

Those who hae read this thread will most likely just ignore him.

I'm just giving him the benefit of doubt, he might just have had a bad day!

But if he pops off again, he'll be gone!
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