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08-30-2005, 05:24 PM
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#1 |
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Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
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Re: back firing problem!
Okay, I'll go out on a limb here and say you have a loose collector bolt. This will cause a slight exhaust leak, but when you back off the throttle suddenly, after punching it, it will create a small "backfire" because the sudden vacuum draws oxygen rich air into the red hot exhaust, and causes it to ignite. Very common problem when a header collector bolt is loose, or the gasket is damaged.
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