Contour Enthusiasts Group Archives Forums Modifications Zetec Maintenance need help here????

Originally posted by Mystic:

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Originally posted by MystiqueGS97:

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A mechanic friend of mine tells me that they are very sensitive to having the right back pressure in the exhaust system and sometimes something as simple as replacing a holed muffler will partially alleviate the problem.

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I doubt that's it, in fact I would say our engines aren't very sensitive to exhaust back pressure (other than changing your powerband) and it would have no affect on vibrations (my experience based on stock exhaust vs. straight pipe).


Check your motor mounts, all your pulleys and belts and the general condition of your fuel system, hoses, and spark plugs/wires.