1987 pontiac trans am

1987 PONTIAC FIREBIRD
209,000 MILES • V8 • 2WD • AUTOMATIC
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JUSTIN LEWIS
  • MEMBER
  • 1 POST
what could be makin a slow tapping noise in the motor left rear side and i smell anifreeze just every now and again
Dec 31, 2010 at 6:48 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
The tapping may be a noisy valve lifter, you will have to get a cooling system pressure test done to help locate any external coolant leaks, start here.

mark (mhpautos)
Dec 31, 2010 at 7:45 PM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
I agree about the pressure test, but the tapping if it's not in time (rythm)of the engine and more like a tinny rattle, could be either a heat shield on the conveter or pipes(exhaust), or a heat riser with a broken bi-metalic sprig , it's right at the bottom of the exhaust manifold and the top of the Y pipe.
Dec 31, 2010 at 8:46 PM
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