[Vwdiesel] More Quantum Questions

[Brian and Ruth Decker]

	I have a friend that has a 77 Dasher 2 door 1.6 diesel that he
bought that had sat for a few years. It would start cold but after shutting
it down it would not start after it had set for an hour or so. He tried
everything. A different injector pump, injectors, glow plugs, and starter.
He brought it to me to sort out with my old VW guru Harvey Nelson. We
started Where he should have and did a compression check and all cylinders
were so low the engine should barely start. We finally cured the non restart
hot problem by installing a glow plug system using a ford starter relay and
a push button switch. It will start hot now if you glow it. We feel that the
compression is so low that it won't start even when warm without glowing and
the stock system won't glow when the engine is warm.
	I believe if you haven't done so already that the first thing to do
is a compression check.
Brian Decker

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On
Behalf Of William J Toensing
Sent: Thursday, August 11, 2011 10:44 PM
To: VW Diesel Fans
Subject: [Vwdiesel] More Quantum Questions

My Quantum still has me stumped. I let it set for several months, went out
to start it & it fired right up when I wanted to demonstrate its starting
problem. Yesterday, I wanted to get into the garage where I keep the Quantum
& it started right up. I moved it out of the garage & turned it off. I let
it sit for several hours, went to start it & it wouldn't start. I decided I
would get it back in the garage by first putting it in reverse, let the
clutch out & then used the starter to move it & it started. Got it back in
the garage, turned it off & again tried to restart it & it wouldn't start.
When it does start it sounds like the IP is advanced a little to much.

To refresh you on what I have done, I replaced the head gasket after having
the head surfaced & the valves ground in a machine shop. I had the IP
rebuilt. Installed new glow plugs, replaced the fuel shut off solenoid,
wired up a relay to the fuel solenoid so it would get electricity directly
from the battery.  It is as if heat generated in the engine compartment
causes a "vapor lock" which shouldn't happen with diesel fuel. Could the
fuel shut off solenoid stick in the off position when it gets hot? Any other
ideas for trouble shooting my Quantum? 

Bill Toensing, Nevada City, CA.