Todd25 Posted May 2, 2010 Share Posted May 2, 2010 I have a 1978 yz 400 that won't start cold unless you add fuel to the cylinder. once running and warm it will restart first kick. any help would be great. Link to comment Share on other sites More sharing options...
Paulwhite Posted May 2, 2010 Share Posted May 2, 2010 could be your piston rings are shot but dont hold me to it. do a compression check to find out. Link to comment Share on other sites More sharing options...
Todd25 Posted May 2, 2010 Author Share Posted May 2, 2010 I have a 1978 yz 400 that won't start cold unless you add fuel to the cylinder. once running and warm it will restart first kick. any help would be great. it has a brand new top end. Link to comment Share on other sites More sharing options...
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