1987 Pontiac Trans Am

Tiny
JUSTIN LEWIS
  • 1987 PONTIAC FIREBIRD
  • V8
  • 2WD
  • AUTOMATIC
  • 209,000 MILES

What could be makin a slow tapping noise in the motor left rear side and I smell anifreeze just every now and again

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Saturday, January 1st, 2011 AT 2:48 AM

2 Replies

Tiny
MHPAUTOS
  • EXPERT
  • 30,776 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)

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Saturday, January 1st, 2011 AT 3:45 AM
Tiny
MERLIN2021
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  • 17,581 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.

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Saturday, January 1st, 2011 AT 4:46 AM

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