My 1994 mercury topaz is making a hissing noise near the back center of the engine. Possible reasons?


Asked by Mar 19, 2016 at 04:01 PM about the 1994 Mercury Topaz 4 Dr GS Sedan

Question type: Maintenance & Repair

My mercury makes a hissing sound when idling and a whistling sound when
accelerating, the sound seems to be coming from the backside of the engine
in the center. What could be the issue?

1 Answer


Vacuum hose is split, hole in it or cracked.

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