[T3] That Fuel pressure regulator

[Keith Park]

It wasn’t loose, the lock nut was tight,  heat?  Maybe, but it has cold fuel running thru it all the time when its in use.

Keith


Topnotch Restorations
topnotch at nycap.rr.com
http://www.topnotchresto.com
71 Squareback  “Hothe”
65 Notchback  “El Baja Rojo”
93 RX7  “Redstur”
13 Subaru Outback "Blendin"

-----Original Message-----
From: type3-vwtype3.org <type3-vwtype3.org-bounces at lists.vwtype3.org> On Behalf Of TOM MITORAJ
Sent: Monday, May 16, 2022 8:32 PM
To: type3 at vwtype3.org
Subject: Re: [T3] That Fuel pressure regulator

Could it be vibration of the lock nut causing it to loosen?Excessive heat causing a problem?


Sent from AT&T Yahoo Mail for iPhone


On Monday, May 16, 2022, 8:17 PM, Keith Park <topnotch at nycap.rr.com> wrote:

 

Took a trip to PA last weekend, it's a 1 tank drive and I noticed on the way down the fuel pressure was up at 31-32PSI, not the 29 it was calibrated to.

When I did a hot start, it would go up to the mid 30's or higher, then wander down to 32 or so.  This is exactly what the last pressure regulator did on a long trip about 25 years ago, and Jim dissected that one finding no issues.

 

So I got down there, adjusted the pressure back, which is did, then raised it a bit to get it back to 29 and it took almost the half turn or so It took to get it down, then it was fine, 29, and stayed that way all the way home.

 

Without the gauge, I would never have known except for a little more hunting around with little or no throttle on a coast, it does that when its running rich, and of course. I lost 2MPG on the trip down, which hurt with gas so obnoxiously high.

 

I still wonder what the mechanism is that's causing the issue?  And of course, how long it will be before I have the issue again??

Keith

 

 

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