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Date:         Fri, 17 Aug 2001 16:32:40 -0400
Reply-To:     Michael Townsend <townsend@RTP.ERICSSON.SE>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Michael Townsend <townsend@RTP.ERICSSON.SE>
Subject:      Re: fuel pressure regulator and manifold vacuum experiment
Comments: To: Matthew Pollard <poll7356@UIDAHO.EDU>
Content-Type: text/plain; charset=ISO-8859-1

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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