1997 Honda Civic Misfire in cylinder 3

Tiny
LEHNERD
  • MEMBER
  • 1997 HONDA CIVIC
Engine Performance problem
1997 Honda Civic 4 cyl Front Wheel Drive Manual 138k miles

Im getting CEL P0303 - Misfire Cylinder 3
New Plugs, plug wire, Dist cap, Rotor, replaced injector in cylinder 3.

Timing is fine, does not sounds like any misfire in the engine. Steady crusing from 2K - 3K CEL would flash. Poor gas mileage.

What could be the reason of misfire?

Please help. I'd appreciate any info.
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Thursday, September 4th, 2008 AT 9:06 PM

4 Replies

Tiny
LEGITIMATE007
  • EXPERT
Check/change o2 sensor and check your knock sensor maybe faulty
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Thursday, September 4th, 2008 AT 10:47 PM
Tiny
LEHNERD
  • MEMBER
Both O2' s are new. Will get a new knock sensor asap. Thanks for the advise.
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Sunday, September 7th, 2008 AT 7:52 PM
Tiny
LEGITIMATE007
  • EXPERT
Good luck
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Monday, September 8th, 2008 AT 12:24 PM
Tiny
KHLOW2008
  • EXPERT
Other things to check/perform are the EGR system and a compression test. Check valve clearance as well.
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Monday, September 8th, 2008 AT 1:42 PM

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