BLACK SOOT IN TAILPIPE AND ALL OVER BACK OF CAR ...

  • Tiny
  • Anonymous
  • 1996 Mazda Protege
  • 220,000 miles

Black soot in tailpipe and all over back of car has new plugs wires cap rotor fuel and air filter runs a little rough still no check engine light no stored codes seems to be running rich and don't know why.

Thursday, October 18th, 2012 AT 9:57 PM

1 Reply

  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Check the engine compression, fuel pressure regulator and ignition timing.
Ensure air filter is not clogged.
Check Engine Coolant Temperature performance.

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Sunday, October 21st, 2012 AT 7:37 AM

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