Thanks for your suggestions, The car has Bosch L-jetronic.
George Graves
'86 GTV-6 3.0 'S'
On Apr 24, 2010, at 10:01 PM, [email protected] wrote:
George,
You mentioned you'd pulled wires to ID a bad cylinder and found all to
be equivalent. Did you look at the plugs to see whether any were
running especially lean? If there are injector ground problems, that
would lead to lean mixture. Do you have an exhaust gas O2 sensor on
the
car? I don't know GTVs but we have some 164s and an '86 Spider with
O2
sensors. If you're not getting lean fuel ratios, you probably don't
have a fuel ratio issue unless you're getting overly RICH mix. I have
seen over-rich mix result from stuck-open thermostats and consequent
cold-running cars. Or maybe your coolant temp sensor is failing and
you're getting too rich a mix.
That kind of thing has (I think) been plaguing my '91 164L. Or so I
thought until last weekend when I decided it was a jellified in-tank
fuel pump bushing causing some fuel flow issues. The jellied and now
flowable (as opposed to solid but pliable) rubber can plug the 164
pump
inlet. I've had that happen twice since we went to gasohol here,
although it might simply be age and not the gasohol. The 164 pump,
when
its inlet is plugged, seems to have a bypass port which sucks air into
the pump rather than imploding the in-tank strainer and sucking all of
the accumulated debris into the pump to destroy it. The GTV may be
suffering from a different detailed ailment, but fuel starvation -
could-
be playing a part. This isn't your GTV6, is it? If it's an older
GTV,
does it have a Spica system, or is it a later car with Bosch
injection?
I don't -think- you made that plain to all readers. I'm not certain
of
the answer. I sure hope this helps somehow.
Michael Tiefenback
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