LT1 LOW FUEL PRESSURE

[Mike Rolica]

I'd be looking at the pump.  I had a heluva time with a z24 28mpfi in tank
pump.  It wal actually leaking in the tank.   Sounds like kindaf a butcher
job, but I ended up yanking the intank pump out and putting a inline type
used on ford pickups/mustangs just before the filter.  I't was a bugger to
replace, And I have a bad habit of running out of fuel too many times and
burning out the pump.  That and winter seemed to be hard on them too, don't
know if it is water or what.    Another question, since it is a dc motor,
you didn't happen to hook the pump up backwards did ya ?:-)  Done that too
on the dyno.
Mike Rolica
EXT. 260
 :-)


	-----Original Message-----
	From:	Luke Joseph [SMTP:LJoseph at RFMD.com]
	Sent:	Tuesday, October 19, 1999 2:20 PM
	To:	'gmecm at efi332.eng.ohio-state.edu'
	Subject:	RE: LT1 LOW FUEL PRESSURE

	I tested the regulator by pinching the return line and watching the
fuel
	pressure gauge while pump was on ( I could hear it running).  I
could see no
	increase in pressure.  I have tried both the 5/16(original vent) and
	1/4(original return) as the current return.  With the same results.
Sorry
	about such basic questions but I've got to get to the point were she
is
	running before I can start playing with scanning and programming.
Thanks,
	Luke
	--Original Message-----
	> From:	Roger Heflin [SMTP:rah at horizon.hit.net]
	> Sent:	Tuesday, October 19, 1999 1:05 PM
	> To:	gmecm at efi332.eng.ohio-state.edu
	> Subject:	Re: LT1 LOW FUEL PRESSURE
	> 
	> 
	> 
	> On Tue, 19 Oct 1999, Luke Joseph wrote:
	> 
	> > 	The last couple of weeks I have been trouble shooting my,
rough
	> > running, newly installed LT1 in my Monte SS.  I finally bought a
fuel
	> > pressure gauge and discovered I had very little fuel pressure
(1-2kpa
	> not
	> > 35-45).  I was amazed that the engine could run on such low
pressure.  I
	> am
	> 
	> You mean 1-2 psi?  The 35-45 is in psi.
	> 
	> > using a in tank fuel pump out of an L98 Camaro, the tank is out
of a 85
	> V6
	> > TBI Monte.  I found no kinks in the line anywhere and I dropped
the tank
	> > last night.  My question is how can I confirm that it is the
pump and
	> what
	> > is the best pump for this application.  The pump was chosen
because it
	> was
	> > the only AC Delco in tank high pressure fuel pump the auto parts
store
	> had
	> > in stock.  By the way I know the gauge works because I checked
it on our
	> 96
	> > Impala and it read the correct pressure.
	> > 	
	> 
	> I though the L98 was capable of the kind of fuel needed for a LT1.
	> 
	> Are the regulator and return lines installed right?
	> 
	> > Thanks,
	> > Luke   
	> >