Leaking


9723

15+ Year Member

Joined
Oct 22, 2008
Messages
324
Points
3,101
Vehicle Year
1997
Engine
2.3 (4 Cylinder)
Transmission
Manual
..been hearing an exhaust leak where the manifold connects to the catalitic converter section. Took it apart and I see no decernable reason it should be leaking. No bending or warping, no corrosion to speak of.

Only two reasons I can think of:

1. It just needs to be aligned, reseated and torqued evenly.
2. The catalitic is clogged enough to force blow-by thru that fitting.

The '97 has no gasket there and the manifold is a true header (steel tubing) from the factory, and hard to find.

I'm hoping someone has been thru this and has some info....

Thanks!!
 
Same problem on my 97 2.3. Until I removed the cat converter, that is. But that Header to down-pipe is a B!@tch to tighten the top bolt.
 
I welded mine shut when I did my 4.0 swap :D Of course I only have a foot of pipe after the y-pipe since I'm running a single cat but since no stores had that damn gasket I decided to weld it solid, no leaks :D
 
I fixed it....took it out, lightly hit it with 000 steelwool, put it back in.

I was very careful to line it up snuggly and straight, then I hand tightened the two bolts to the manifold, checking to make sure they were each (on the flange) the same distance from the manifold. Then I torgued each at the same time, starting at 30 lb/ft, then 35, 40 and 45. Tightened the back to the muffler and no more exhaust leak.

I also soaked ( in liquid wrench) and put the wire brush to all the bolts.
 
Last edited:

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