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2008 500 Auto 4x4 won't start HELP


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Just got over the weekend and can't even get a sputter from it starter clutch missing the top idler so it's pull rope only. Seems to have plenty of compression and it has spark when checked with plug out 

I've spray starting fluid directly in carburetor and while manually opening up the choke still nothing not even trying to start. Changed the plug as well. I'm going to order the starter clutch idler and anything else bad or missing but I want to at least hear it stumble or something but I tear apart. Carburetor was nasty and I'm getting cleaned up nice. I have fuel, spark, and compression. Even tried to spray in cylinder then stick the plug back in.

With all that in mind what else can stop it from even trying

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It  may  have spark  in free air but  fail  under compression.  Get an in line spark tester and see f that may be the case.  you  can likely get one at a local  auto supply  or  order online . They're not expensive and handy to  have when  chasing down an ignition problem.

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I'll look for the one I have and give it a try but I'm thinking the CDI is causing my problem. Has anyone had the same issues with theirs? I'm thinking the spark I'm getting is not in time with the compression stroke and actually sparking when the valves are open. I found a performance CDI replacement for 129. If anyone knows where to get it cheaper please let me know

 

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Before buying any parts it couldn't hurt to check the cam timing. If the cam chain has stretched and jumped a tooth ( or been assembled wrong) then you could have this problem.

An engine can have compression and spark but if the timing is off, it won't run or run right. This also applies to a flywheel key that is tweaked which affects ignition timing.

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