Engine Mechanical problem
1977 Pontiac Firebird V8 Two Wheel Drive Automatic 15000 miles
1977 ponticac firebird with 400 pontiac engine.
What can cause a big plume of dense smoke out the exhaust, on right side only, at high rpm (@4000+).
Some times the smoke occurs at a little lower rpm (@3000+) when letting off accelerator such as merging from entrance ramp onto highway.
The smoke quickly clears when steady pedal is maintained.
Also another problem that might or might not be releated is that
it drips oil at high rpm out of the transmission drip pan also and
the dripping seems to stop when just idling the engine.
Have tried removing PCV and oil filler cap to ensure valve covers can breathe.
have the same problem?
Sunday, March 7th, 2010 AT 8:29 AM