Date: Mon, 6 Mar 2006 18:52:10 -0600
Reply-To: Max Wellhouse <maxjoyce@IPA.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Max Wellhouse <maxjoyce@IPA.NET>
Subject: Re: permanent fuel pressure gauge
In-Reply-To: <000001c64129$8bcb7830$e1e4fe42@jbeauliexp>
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What he said
At 08:23 AM 3/6/2006, jake beaulieu wrote:
>I don't think anybody proposed running a line from the fuel rail all the way
>up to the dash. Max proposed running a 1 inch high pressure fuel line from
>the T in the fuel rail to the electric sending unit. Just 1 inch, not much
>different than the lines running to the injectors or FPR. Ideally a person
>could track down a proper fitting with male threads to screw directly into
>the fuel rail and female threads to accept the sender. I agree that running
>a pressurized fuel line up into the dash is a very bad idea, but nobody
>proposed such a thing.
>
>"...to monitor pressure for some future fuel system problem is foolish,
>period! Wait till you have a problem and then run a under-hood temporary
>gauge, hooked right up to diagnosis it, being very careful then at that!"
>
>The advantage of having real-time fuel pressure readings is that you can
>instantly diagnose INTERMITENT problems. You know, the kind that are
>difficult to reproduce while the van is in the garage with a temporary
>pressure gauge attached.
>
>Jeez, and its only Monday morning!
>Jake
>
>-----Original Message-----
>From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
>Raceingcajun
>Sent: Monday, March 06, 2006 7:33 AM
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: permanent fuel pressure gauge
>
> Let me start by saying I'm not trying to get on a soapbox, or a
>high-horse, etc!
> Forgive my dumb question, but let me see if I got this right? You have a
>rubber hose under full working fuel pressure (maybe 30 lb's right), running
>full length of your bus, including run to the interior? Also in this mix is
>an $12.00 aftermarket gauge.
> And now you purpose to do the same thing on an Audi CIS system, running
>full working pressure of 75 lb's to 85 lb's. CAN YOU SAY BOOM!
> With that much pressure, a running pump, an accumulator. If the hose
>came off, or was cut in an accident, or the hose burst at the gauge, or the
>$12.00 gauge failed. You might get as much as a gallon of fuel in your lap
>before the pressure relived itself, if the pump wasn't still running.
> But you have no spark to ignite the fuel you say. A brush type motor
>makes sparks while running. Wipers, Blower motor, turn signal flasher, etc.
>(key word there being FLASHER)
> Anyway I'm not trying to insult you, and sorry for the rant, but I think
>this is foolish!
>
> I thought this topic started out as an electric sending unit type gauge,
>with no hose's involved idea? That wouldn't be too bad hooked up right. But
>20 ft of rubber hose. No way, I don't care how careful you are, or how high
>a quality hose you use. NO WAY!
> This whole idea of a dash mounted diaphragm antilog fuel gauge, to
>monitor pressure for some future fuel system problem is foolish, period!
>Wait till you have a problem and then run a under-hood temporary gauge,
>hooked right up to diagnosis it, being very careful then at that!
> Come on guy's THINK!
>
>LET THE FLAME WARS START!
>
>Howard
>
>Two wrongs don't make a right,
>But three lefts do.
>
>Subject: Re: permanent fuel pressure gauge
>
>
> > I've done just as you've described a year ago with the additional step of
> > taking my oil temp gauge and adding water temp to it.
>
> Bought a generic
> > VDO water temp sender at Napa of all places for like $12
>the test equipment is spozed to hok up. Fins a safe place
>
> > Now I will do the same thing to my 87 Audi 4kq except I''ll need a higher
> > reading Oil pressure gauge and senders as the 5 cyl does fuel pressure
> > closer to 85-90 psi.
>
>
>
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