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Join Date: Nov 2000
Location: dana point, ca USA
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back pressure and a rotted muffler

to what extent will a rotted muffler (i.e., exhaust leaks at the welded section mated to heat exchangers) affect engine performance?

specifically, would the exhaust leaks reduce back pressure enough to cause the car to run poorly?

Old 02-10-2003, 02:37 PM
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Location: Roseville, CA
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I noticed after replacing my muffler, that the number of backfires went down, and it did seem to run better. So yes, I think there is some connection.

-Boyo
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Old 02-10-2003, 03:54 PM
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the toxic fumes leaking under the car will eat it alive. fix it soon.

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Old 02-10-2003, 05:36 PM
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