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damn 2003 crf 450

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Well I really love my honda when it's running. I just replaced my valves and springs. And now it is harder than hell to start. I know that my valves are almost dead on. Intakes are a little tight @ .010 and exhaust dead on@ .027. The funny thing is when I kick it for about 30 kicks and then let it sit for about 5 min I can usually start it in about a kick or two. it sounds like it could be a jet but, it started ok before the valve job and I have not touch the jet settings. I am ready to burn my bike and buy a two stroke... HELP

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MM is the spec that I was using

If you're measurements are correct, then no wonder it's hard to start.

You're not even close to spec.

.027 mm = 0.00106 in

.010 mm = 0.00039 in

Sure that's not cm??

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Even if the adjustment was wrong, it wouldnt be that hard to start. You missed the timing by a tooth. Go back and look at it again. And make sure youve go the decompressor adjusted correctly too...

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