Re: Rough running 4000q

["Mark L. Chang" <mchang@ece.nwu.edu>]

Just recently had the same problem -- turned out to be a bad injector.
$50-$70 to fix.

If you pull the plug on block side you can find out which cylinder is
crapping out on you.  Then, swap injectors with its neighbor and you can
make certain it isn't the injector (or if it is)...

Mark

On Tue, 8 Jun 1999, Whitson2 wrote:

> 1986 4000csq
> Help... My baby is running a bit rough at idle and seems to
> stumble/stutter when power is put on till about 2700 to 3000
> rpm's. Any ideas ?  I looked over the vacuum lines and
> replaced a couple that looked suspicious to no avail.
> Thought it may be a cylinder not firing so I disconnect one
> plug wire from the dist. cap and restarted finding that the
> engine ran the same. Any listers experienced this ? TIA.
> -- 
> Dennis Whitson
> '86 4000 CS Q  (tripping on its shoe strings)
> 

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