1996 Geo Prizm problems with car

1996 GEO PRIZM
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BILLY3771
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Engine Mechanical problem
1996 Geo Prizm 4 cyl Front Wheel Drive Automatic

I have a 1996 geo prizm lsi , I just bought it over a month ago. I took it to auto zone and it came as a misfire in the number 3 cylindor . I replace the sparks and it still sounds like a misfire in it. I have checked the injectors and they are good. I used some fuel injector cleaner on twice and recently it has started to stallin when i come to a complete stop ... I have checked for leaks and there is none. someone told me that the emission will cause the problem ..
Feb 21, 2009 at 11:51 AM
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MMPRINCE4000
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I would have replaced the cap and rotor, wires and PCV valve, air filter.

If problem persists, check compression on all cylinders, if #3 is 20% lower than rest, then you may have a head gasket or valve problem. If compression is OK, then remove and clean EGR and IAC (idle air control) valve.
Feb 23, 2009 at 6:53 AM