Date: Sat, 18 Aug 2001 00:08:10 -0500
Reply-To: Mark Ingalls <ingalls_mark@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mark Ingalls <ingalls_mark@HOTMAIL.COM>
Subject: Re: fuel pressure regulator and manifold vacuum experiment
Content-Type: text/plain; charset="iso-8859-1"
Hi,
I posted a few weeks ago about my new fuel pressure regulator being too high
just like my old one.
The new Bosch regulator in a sealed box from BD provided 38 psi disconnected
with a calibrated gauge.
My old one provided 39 psi disconnected.
They both ran around 33 psi @ 11" vacuum.
I'd wish I still had that $60. : )
Bye,
Mark Ingalls
----- Original Message -----
From: Michael Townsend <townsend@RTP.ERICSSON.SE>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, August 17, 2001 3:32 PM
Subject: Re: fuel pressure regulator and manifold vacuum experiment
> OK,
>
> No, it was measured with only one guage. One guage that is not calibrated
> every year to NIST standards. That is my dilemna . . . is 10% (+/-
unknown
> guage calibration) enough to worry about spending $75 for a new regulator?
> Should I spend $90 and get an adjustable regulator like Robert did and set
> it with his guage? Could 10% too high pressure contribute to my low
> around-town gas mileage, along with my dribbly injectors? In terms I am
> used to, 20 * log (32 / 29) means I am only 0.9 dB over spec!
>
> Maybe I should buy my own guage ($35) and compare it to Robert's to at
> least get a reading from two instruments. Then, I can buy the adjustable
> FPR ($90) and have my own guage to set it. My new remanufactured fuel
> injectors ($193) will enjoy it. After spending about $600 (Thanks George
> Jr.) on my AC system, my walletectomy is about complete -- the patient is
> dead.
>
> Does it ever end? :-|
>
> Michael
> Durham NC
> 90 Carat Moneypit
>
> ----------
> > From: Matthew Pollard <poll7356@UIDAHO.EDU>
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: Re: fuel pressure regulator and manifold vacuum experiment
> > Date: Friday, August 17, 2001 4:03 PM
> >
> > > I have one of these vacuum guages and I have borrowed Robert Lilley's
> fuel
> > > pressure guage, so I will give your test a try next week. I measured
> it
> > > last weekend at 32 psi unconnected and 39 psi connected -- slightly
too
> > > high but not enough to worry about, I hope. I forgot to plug the
> manifold
> > > vacuum hose, though, so I need to repeat this measurement. (What does
> the
> > > g stand for in psig?)
> > >
> >
> > Wait! Slightly too high? Like how much? 3psi is about 10%... follow
that
> > through and it means 10% more gas in the injectors.... It should be dead
> > one spec. A bit high (on two independent gauges) is not acceptable.
I've
> > been down this long road before....
>
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