2001 Chevy Impala intake manifold

Tiny
CHRIS_JULIE_PUTNAM
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 107,000 MILES
I have recently discovered a hole in my upper intake manifold. It is the 3.8l v6. I have been driving the car still after using a couple different methods to plug the hole but it still leaks air which in turn causes the engine to run poorly. What kind of further damage could driving it this way create? Is there a quick fix for this leak or should I just replace the part? The hole is in a very difficult spot on the intake.
Tuesday, April 29th, 2008 AT 8:35 AM

2 Replies

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
You should replace it. These are temperamental intakes anyways. They are more known for the coolant leaks internally on them.

The lean condition is going to cause bad adjustments to the fuel /air ratio.
Was this
answer
helpful?
Yes
No
+1
Tuesday, April 29th, 2008 AT 8:42 AM
Tiny
DENNYP
  • MECHANIC
  • 1,824 POSTS
You probably have a partially restricted catalyst that caused the excessive backpressure to burn a hole in the plenum. The hot exhaust goes through the EGR tube and acts like a blow torch to burn through the plenum. Replace the plenum and check the converter for backpressure.
Was this
answer
helpful?
Yes
No
Tuesday, April 29th, 2008 AT 9:41 PM

Please login or register to post a reply.

Sponsored links