Thread: Backfire - Why?
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Old 02-23-2011, 01:09 PM   #8
Dave in VA
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Join Date: Oct 2009
Location: SW Virginia USA
Posts: 6,316
Default Re: Backfire - Why?

Quote:
Originally Posted by stuff4mason View Post
I took a look today. The butterfly was all the way closed. In fact, the throttle wasn't even touching the idle screw. So, I screwed it in, just enough where its touching. The mixture screw was 2 1/2 turns out. I brought that back in to 1 1/2 turns. The plug surpriselingly looked good. Just light brown. I also took the muffler off and found a pin sized hole I must have missed on my last weld job at one of the brackets. They are easy to spot, since there was a tiny bit of carbon build up around the hole. But, I also found a very minor crack between the muffler and the header. Got all that welded back up. Its snowing today and the driveway is a muddy mess, so I can't test the changes yet.

Thanks guys for your input!
Where are you located? No snow in N Va.

Sorry--that was yesterday. Yeah, we got ice and snow.

Last edited by Dave in VA; 02-23-2011 at 01:11 PM.. Reason: can't read
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