MISSFIRE

Mercury Tracer

Tiny

samsimon

June, 19, 2006 AT 1:59 PM

I got a 1997 mercury tracer 170000 miles on it. Cylinder 4 misses at idle or in slow RPM then car start running smooth(by turning on AC it happened more often). Replaced sparkplugs and wires still same. Do you think I may have a bad fule injector
please advise
thanks
sam

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Engine Miss

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1 Answer

Tiny

eperry

July, 21, 2006 AT 4:40 AM

Could be a bad cam sensor.

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