LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Exhaust fumes in passenger compartment thru ventilation system

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Old Feb 20, 2008 | 07:54 PM
  #1  
slpfirehawk95's Avatar
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Question Exhaust fumes in passenger compartment thru ventilation system

Fumes don't enter the car with the heat/air/vent closed. The fumes only enter when the car is not moving.

Exhaust underneath is solid according to Midas.

Obviously a leak somewhere in the engine compartment.

What are the obvious places to find it? i had a rocker replaced a month ago after it broke, so I'm wondering if the mechanic missed something (he's 400 miles away after i moved).
Old Feb 20, 2008 | 08:19 PM
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From: northern indiana
check the air injection tubes for cracks,hoses split or clamps broken. the exhaust manifolds sometimes leak at the head.
Old Feb 20, 2008 | 08:24 PM
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Also check the EGR tube in back of the intake.
Old Feb 20, 2008 | 09:15 PM
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From: Ocala, Florida
Are you running cats?
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