1992 Mercury Capri running rough

1992 MERCURY CAPRI
92,000 MILES • 4 CYL • 2WD • MANUAL
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SADOWNER1
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  • 1 POST
i have a 92 mercury capri 1.6l non turbo and it idles fine but once under pressure it misses like crazy until i reach high rpms (4000) replaced coil replaced cat converter, cap rotor and wires are fine and the fuel filter was recently replaced


HELP!!!!!!!!!!!!!!
Jun 5, 2010 at 9:21 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Engine running rough or misfiring can be cause by the following:

1.Defective spark plug
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Idle air control valve.
Jun 5, 2010 at 10:05 AM
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