Date: Tue, 6 Mar 2018 19:20:18 -0800
Reply-To: stuartmacm@GMAIL.COM
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Stuart MacMillan <stuartmacm@GMAIL.COM>
Subject: Re: Fuel pressure too high
In-Reply-To: <CAB2RwfgXvp_Kk8X7tNqNVyGC3+ZrQFE2TN0D=-Ny+_X=OAsb5g@mail.gmail.com>
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Hi Neil, nice theory, but completely bogus. I drove well over 250k miles in my previous '84 Vanagon with the early small tank outlet with no pump noise until the fuel pump was on its last legs around 200k. Something else is causing the fuel pump to make noise. Therein lies the problem . . .
Stuart
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Neil N
Sent: Tuesday, March 6, 2018 6:18 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Fuel pressure too high
Interesting to hear your results. I hope it works out long term. Different thing but FWIW, my fuel pump makes noise on and off and has done so for many thousands of miles. In my case, I'm pretty sure the sound is due to the early style tank having a narrower ID outlet. Later tanks have a larger ID outlet.
Neil.
On Tue, Mar 6, 2018 at 4:52 PM, Rick Cooper <rickdcooper@gmail.com> wrote:
Got everything cobbled back together. Checked the return line again by
> blowing through it. Little resistance, bubbles sounding in the tank.
> Replaced vacuum line to pressure regulator since it was an original
> and of debatable quality. While idling, no vacuum build up in tank,
> no whoosh when opening fuel cap. Fuel pump operating quietly.
>
> Took it for a 10 minute drive. About half way, I'm starting to hear
> the fuel pump buzzing, though not loudly. No loss of power or stalls.
> When I got home, I removed the gas cap again. No whoosh and no change
> to fuel pump whine. Blowing through the return line it seemed
> unobstructed. Maybe the fuel pump was damaged by having to deal with
> water in the gas over the last few weeks?
>
> I'm not totally convinced the problem is solved but I'll be using it
> daily over the next few days and we'll see.
>
> For the record, I should add the fuel pressure readings I reported
> earlier were not the result of a faulty pressure tester but rather a
> faulty operator -- I was reading the wrong scale. The right scale
> (psi) on this tester maxes out at 10psi, so I'd guess that the fuel
> pressure is okay but will pick up one that can handle 40 psi or more.
>
> Thanks again for all the help along the way, it was very much
> appreciated. This is a great forum for mechanical neophytes like me.
>
> Rick
>
>
--
Neil n
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