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.