I can't hear it, I don't know
Can It Be?
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Posting Guru
Joined: Nov 2007
Posts: 2,014
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From: Long Island, NY
Can It Be?
Can it be a intake leak that is making the hissing noise that i am getting? I replaced the exhaust donuts but I am still getting the noise. It starts to make the noise at 1000 RPM or just above that.
Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
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From: Southwest Georgia
To check the intake boots (post turbo) mix up some soapy water (heavy on the soap) and spray on the boots and around the clamps. I have found a few intake leaks this way. Oh yea, I forgot to mention that you will probably need to have it running about 1200 rpm or more to have enough boost to show a leak, so be careful when leaning over the engine spraying with the engine running that fast.
Thread Starter
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Posting Guru
Joined: Nov 2007
Posts: 2,014
Likes: 1
From: Long Island, NY
To check the intake boots (post turbo) mix up some soapy water (heavy on the soap) and spray on the boots and around the clamps. I have found a few intake leaks this way. Oh yea, I forgot to mention that you will probably need to have it running about 1200 rpm or more to have enough boost to show a leak, so be careful when leaning over the engine spraying with the engine running that fast.
Posting Guru
Joined: Nov 2001
Posts: 1,743
Likes: 2
From: Ft Scott
Have you checked the studs that hold the manifolds to the head. They've been known to break off, and will either "hiss" or "tick"
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Posting Guru
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