Re: SM blows muffler apart!!!

Posted by EricB on November 24, 2004 at 09:44:10 from (216.209.84.11):

In Reply to: SM blows muffler apart!!! posted by knauffj on November 24, 2004 at 07:25:28:

Yes there has be be fuel to backfire but there are other causes. The timing angle of the distributer may be off. If you have a timing light make sure you are firing at the right spot. (I think its about 6 degreees before TDC) A good ear can also be used in a pinch.
The other cause for gases to escape into the manifold is a burnt valve. Do a compression test. My thinking is the valve problem would also explain the poor perfornace under load.

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