1997 Honda CRV black exhaust pipe

1997 HONDA CRV
106,125 MILES • 4 CYL • 4WD • AUTOMATIC
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DEBO CR-V
  • MEMBER
  • 2 POSTS
I always use denso Q20 spark plugs and for the first time two days ago my car was throttling like it is missing, when the plugs were taken out they were black and the air screw was black and the exhaust pipe also.
Mar 20, 2009 at 8:12 AM
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F4I_GUY
  • ✓Experienced Mechanic
  • 3,302 POSTS
You may have an over-fueling issue or that may be carbon.

https://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals

Go to this link and tell me which one your spark plugs looked like and I can assist you. Also tell me if it was all four spark plugs or just a few that looked like this.
Mar 21, 2009 at 7:11 AM
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