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Re: Rough running [saabnet.com]
Posted by Andy Hill - http://saabnet.com/tsn/forms/e.php3?em (more from Andy Hill - http://saabnet.com/tsn/forms/e.php3?em) on Mon, 1 Nov 2004 14:39:07
In Reply to: Rough running [saabnet.com], Derek Shaffer - http://saabnet.com/tsn/forms/e.php, Mon, 18 Oct 2004 22:28:53

> My '91 9000T runs very rough at low throttle...disconnecting the wires toeither of the fuel
> injectors on outside cylinders seems to make it run more smoothly, but
> disconnecting the wires to either of the two inside cylinders makes it run
> worse....I smell gas at idle, which seems to be eminating from the
> catalyst. ...Another strange thing is that the turbo guage indicates lessof
> a vaccuum at idle than there used to be .. Look for vaccuum leaks? >

Yes, look for vaccuum leaks. Look at the ends of the intake manifold that
serve the outside cylinder. A simple test that sometimes works is to, while
the engine is running, spray a bit of WD-40 onto a suspected leak. (like the
manifold gaskets or threaded fittings) if the engine revs up, then you know
it sucked some of the WD-40. More likely though, one of the hoses is
unplugged or split.
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Posts in this Thread:

Scandinavian Import
StateOfNine.com
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Jak Stoll Performance

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