Exhaust huffing
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More Turbo
Joined: May 2008
Posts: 548
Likes: 3
From: Beaufort, SC
Exhaust huffing
I've had an exhaust leak at the two flanges in my exhaust system, since I bought my 93. I didn't realize how bad it was, until I saw daylight through one of them when I was working on my transmission swap. I have a friend that owns a custom exhaust shop and he suggested that I cut the piece of the pipe with the flanges out and weld in a new piece. He measured and cut a piece of 2-1/2" pipe and flared the ends for me. The pipe cost me a whole $6!
I cut out the old piece and mig welded the new one in. WHen I started it up, I could then hear a huffing sound. The whole exhaust system (Except the flanges) was in pretty good shape, so I got to worrying that it was a valve problem, or maybe a bad injector.
While at work yesterday, I asked the guys to take a look at the truck. Their first observation was that the thing sounded great. They noticed no vibrations, that were indicative of a miss. Thinking that what I was hearing could be a valve, they had me get the thing good and warm. Then, they sampled the temp of the exhaust manifold at each cylinder. All eight cylinders were within 15 degrees of each other and all were around 250 degrees.
When we crawled under the truck, they said it sounded more like an exhaust leak somewhere. I'm going to put some welding gloves on and feel around the pipes, for leaks. I do know that I would MUCH rather patch/fix an exhaust leak, than to pull the heads!
I'm hoping that I was getting worried over nothing.
I cut out the old piece and mig welded the new one in. WHen I started it up, I could then hear a huffing sound. The whole exhaust system (Except the flanges) was in pretty good shape, so I got to worrying that it was a valve problem, or maybe a bad injector.
While at work yesterday, I asked the guys to take a look at the truck. Their first observation was that the thing sounded great. They noticed no vibrations, that were indicative of a miss. Thinking that what I was hearing could be a valve, they had me get the thing good and warm. Then, they sampled the temp of the exhaust manifold at each cylinder. All eight cylinders were within 15 degrees of each other and all were around 250 degrees.
When we crawled under the truck, they said it sounded more like an exhaust leak somewhere. I'm going to put some welding gloves on and feel around the pipes, for leaks. I do know that I would MUCH rather patch/fix an exhaust leak, than to pull the heads!
I'm hoping that I was getting worried over nothing.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
Drive a tater in it ... 
JK ...
Have someone hold their hand over it while you look, Let em wear a glove if it's to hot for em. A rag won't work to well, You really need a human controlling the flow for optimum effect.
-Enjoy
fh : )_~
JK ...
Have someone hold their hand over it while you look, Let em wear a glove if it's to hot for em. A rag won't work to well, You really need a human controlling the flow for optimum effect.
-Enjoy
fh : )_~
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