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Misfiring issues

Tiny
RODNEY HAMMONDS
  • MEMBER
  • 1998 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Number and two and three cylinders are misfiring. I have changed the plugs and wires as well as the number two and three coil and the car is still misfiring. Also, have added Marvels Mystery oil to my gas as an enhancement. Check engine light is still on and still reading that cylinders two and three are misfiring. Do not know what to do?
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Saturday, December 30th, 2017 AT 1:42 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

Possible issues:

1. Low compression. You need to do a compression test on the cylinders to be sure the engine does not have internal damage.
2. Head gasket. A failed head gasket will cause this as well. A leak down test will confirm.
3. Fuel injectors not allowing fuel or not being commanded to open.
4. PCM not turning on the injectors.

Roy
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Sunday, December 31st, 2017 AT 3:45 AM

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