Question about 2002 Isuzu Trooper

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Trooper 2002 rough idle

Hi
Thanks jhony5846,your discription is great.

My 2002 Trooper 43k miles intermittenly dies on idle,so I stopped using it.

fuelpressure is low about 35 psi instead of 48 to 58 psi,by passing fuel filter did not solve.

I hear a hissing noise, It may be a leaking intake manifold through a gasket. I want to pin point the location using a smoke wand , of course I may require to shut the blower fan
momentarily.

Any suggestions,please
zahid@uic.edu


Zahid

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Check all your vacuum lines by wiggling them around when it's running, and see if the "hiss" changes at all. Instead of the smoke wand, use soapy water. Just dump it on your intake, and if it's leaking it will bubble like crazy. Smoke wands are for locating leaks in houses, not engines.

Posted on Sep 12, 2009

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Posted on Jan 02, 2017

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