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Engine misfiring

Tiny
ASHLIKESCHEVYS
  • MEMBER
  • 1997 CHEVROLET CAVALIER
  • 2.2L
  • 2WD
  • AUTOMATIC
  • 208,352 MILES
Hello, it only does it after the car has warmed up. I have replaced the spark plugs, ignition coil, spark plug wire set, torque strut mount, and o2 sensor and it is still misfiring. It drove fine for a second than went right back to misfiring.
Thursday, January 2nd, 2020 AT 2:51 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

I would start by checking the fuel pressure to be sure sufficient fuel is getting to the injectors.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

You can rent a tester at a parts store for this test.

Low fuel pressure is the most common reason for misfires.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Roy
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Thursday, January 2nd, 2020 AT 3:21 PM

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