01-01-2019, 08:05 PM
sorry i forgot your location.
yes, on this car the fuel pressure must be in spec. yours is acting real odd.
good, no crossed lines. must be gauge lies or FPR bad.
the return line can not be restricted, in most cases this does not happen. (not parked for year with bad fuel)
800 rpm spec is +-50rpm so 750 is dead on.
the trick with the FPR is that it keeps differential pressure across the injector constant. (vacuum regulation does that)
ok, good luck , im off on vacation now.... but will read these.
cheers.
yes, on this car the fuel pressure must be in spec. yours is acting real odd.
good, no crossed lines. must be gauge lies or FPR bad.
the return line can not be restricted, in most cases this does not happen. (not parked for year with bad fuel)
800 rpm spec is +-50rpm so 750 is dead on.
the trick with the FPR is that it keeps differential pressure across the injector constant. (vacuum regulation does that)
ok, good luck , im off on vacation now.... but will read these.
cheers.
(01-01-2019, 09:21 AM)randyz71 Wrote: I am at sea level, 40 miles sand of gulf of Mexico. It is same cold start or after reaching operating temp. No way in my opinion lines can be crossed because they are sane as when I bought it and has ran like a top for several hundred miles. Rpms after warm is closer to 750, I really appreciate your experience and insight, I know gm vehicles pretty well, wanted to be a mechanic in past life and worked in garages in high school, a couple ASE classes, but this thing kicking my butt. Again your experience and help is invaluable! Thank you!
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