BLACK SOOT IN TAILPIPE AND ALL OVER BACK OF CAR ...
1996 Mazda Protege
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
Check the engine compression, fuel pressure regulator and ignition timing.
Ensure air filter is not clogged.
Check Engine Coolant Temperature performance.