[Vwdiesel] More Quantum Questions?

[mark shepherd]

Bill if you have fuel passing through pump and no air bubbles , themn 
problem may well be the solenoid fuel cut off again. Check for power to the 
same, and it's correct operation.
Mark
----- Original Message ----- 
From: "mark shepherd" <mark at shepher.fsnet.co.uk>
To: "vw fans" <Vwdiesel at vwfans.com>
Sent: Sunday, June 28, 2009 1:50 AM
Subject: Re: [Vwdiesel] More Quantum Questions?


>
> Welcome back Bill ;o)
>
> 1) Are yoou running diesel, rather than cannola etc?
> 2) The Quantum ran you say... Did it run for 5 minutes, or for a distance 
> of
> a few miles? Stop and start?
> 3) Did you then leave it for a few days or just overnight before it 
> stopped
> 'starting'?
> 4) Why did you install an electric pump inline? Did you install it just to
> help the draw up of fuel before trying to restart, or after pulling your
> hair out after it failed to start?
> 5) Bubbles are a problem, as they affect the internal pressures of the
> injection pump... Did they appear after electric pump install?
>
> What I would do?...
> 1) Remove electric pump. I see no reason why a pump would lift fuel today 
> ,
> and not 'tomorrow'....
> 2) disconnect supply and return lines at the bulkhead where they are about
> to head back to the tank.
> 3) Get a jug of diesel and dip the  supply line into it. Can you find a
> plastic syringe, [50cc would be perfect] and attach it to the return line
> coming from the pump raise it above the pump and suck the fuel through.
> Quickly remove and then resuck if no diesel comes out on first run.
> 4) When diesel has come through, drop line into your diesel bucket and
> remove syringe.
> 5) Start vehicle. and look for bubbles in supply line to pump. If present
> then screw on top of fuel filter may be leaking, or even water drain.
>
> Come back with some answers please
>
> Mark
>
> ----- Original Message ----- 
> From: "William J Toensing" <toensing at wildblue.net>
> To: <vwdiesel at vwfans.com>
> Sent: Sunday, June 28, 2009 12:18 AM
> Subject: [Vwdiesel] More Quantum Questions?
>
>
>>
>> The Quantum is on strike again, won't run. After I put the rebuilt IP on,
>> it ran like a charm-once. Wouldn't start since. No adjusting of the IP
>> timming since it ran or anything else except I installed an electric fuel
>> pump between the filter & the IP inlet. Saw all kinds of air & bubbles 
>> run
>> thru the intake line & then the return line, then just diesel fuel. Still
>> wouldn't start. Cracked all the injector lines at the injectors, no signs
>> of any fuel so appears not getting any fuel to the injectors. Does this
>> call for another tow start? Anything else I should do?
>> Bill Toensing, Nevada City, CA
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>>
>
>
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