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shoots flame out of exhaust. wont start

6.3K views 13 replies 7 participants last post by  yellowz28  
#1 ·
Hey guys i replaced the crankcase on my 02 r1 so pretty much switched all internals into the new crankcase. I have it all put together and on the bike and it turns over. I'm getting fuel and spark but it just wont fire up. every so often it shoots a big flame out of my stealth exhaust. I'm 99.9% sure i set the timing correctly.
So does anyone have any advice on what might be the problem? I would really hate to have to pull the engine off the bike again
thanx in advance
 
#3 ·
thats what I was thinking ...wires crossed...air leak not going to cause flame out of the exhaust...to me it sounds as if spark is not firing in correct order.....dont think its fuel or air problem...its a no start at this point? just wants to start.....right? recheck ignition system at this point...
 
#4 ·
well i dug into it and i think i found the problem it deifianatly had valve clearance issues. the little spacers inside the cups that sit ontop of the valves wasn't seated properly. So far i have the cams put back in and timing reset and triple checked everything again lol. About to go back out to the shop and start putting the rest of it together and see if that was the only issue.
 
#6 ·
ok got done putting it all together after the valve clearance issues i explained that i found in my previous post. Turned the key and let it prime a few then hit the start button and my baby roared back to life after being a pile of parts for 6 months after my wreck. I'm so happy.. thanx for all the advice guys
 
#7 ·
one of the cams could be 180 degrees off. i have seen this before with a CBR.
 
#11 ·
post up what you find sir..
ok got done putting it all together after the valve clearance issues i explained that i found in my previous post. Turned the key and let it prime a few then hit the start button and my baby roared back to life after being a pile of parts for 6 months after my wreck. I'm so happy.. thanx for all the advice guys
sounds like it was just the valve clearance issue!



Good job man, I bet it was awesome hearing that R1 come back to life!!