[Vwdiesel] adjusting max fuel screw?
gjwolfe at telus.net
Fri Apr 22 22:46:52 EDT 2005
There is a photo of this at my website ('91 TD - 68hp MF engine).
Loosen the 13mm bolt, adjust the screw -- CW = more fuel, CCW = less fuel --
and tighten. I've found this is a pretty tight one to get at, and when you
loosen the bolt/housing the screw also moves.I do mine with the engine off..
Make changes VERY gradually... the width of a screwdriver blade will have an
website is at www3.telus.net/public/gwolfe and click on the "VW photos"
[best to copy/paste the URL... most mess up on the www3.
----- Original Message -----
From: "Area31 Research Facility" <stephensrw at stn.net>
To: <vwdiesel at vwfans.com>
Sent: Friday, April 22, 2005 18:54
Subject: [Vwdiesel] adjusting max fuel screw?
> I have had to add considerable back pressure as a negative side effect of
> making my genset quiet out of respect for sleeping neighbors. As a result
> the engine appears to be running too rich. Fuel consumption is way up and
> power is down. Engine makes more waste heat, all bad consequences. :( I
> was wondering if I could lean it out a bit by adjusting the max fuel screw
> on the Bosch FI pump. Am I correct in assuming this is the one at the
> of the pump just above the fuel solenoid wire connection? How does one
> adjust it? There are three adjustments, a nut, a sleeve with a wrench
> purchase and a square head bolt at the end. I'm thinking the nut closest
> the pump may be just a mounting nut and does not get lossened in the
> adjustment. I am running at 1800 RPM under throttle control by an
> mechanical governor. Any ideas welcomed.
> Vwdiesel mailing list
> Vwdiesel at vwfans.com
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