Date:         Thu, 11 Jun 2009 10:24:55 -0700
Reply-To:     Poppie Jagersand <poppie.jagersand@YAHOO.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Poppie Jagersand <poppie.jagersand@YAHOO.CA>
Subject:      Re: Diesel questions
Content-Type: text/plain; charset=us-ascii

Tip: I use a vacuum pump to fill the system with fuel and
avoid the 1min cranking needed otherwise (exessive cranking
taxes injection pump and starter)

Just pull the injector fuel return hose on the injector side,
(so it remains connected to the injection pump).
Then connect vacuum pump to this hose stump and turn
on. Once diesel comes out the end, the supply loop and the injection
pump are filled and bled of air. Reconnect hose and start.
When running, air will be purged automatically from the return loop.

I use a clear glass container in-line with the vacuum pump to
see when fuel runs clear, and collect the fuel into.
(Similar to a brake bleeder kit)

Martin

--- On Thu, 6/11/09, Poppie Jagersand <poppie.jagersand@YAHOO.CA> wrote:
> When the pump is dry it can take a
> minute of cranking to bring
> fuel into the system. Did you do a total of a minute (in
> say 20s
> intervals) and it would still not start?
>
> Fuel filter is a suspect, and should probably be changed
> anyway.
>
> Another possibility is a fuel leak someplace either in the
> inlet
> or return look (yes a leak in the return will also drain
> the system).
>
> You say this is a car, not a van. Some of the cars (e.g.
> Diesel
> Quantum/Passat from 80's) have parts of the fuel lines
> using metal
> tubing. Look near the tank and under the car. With the age
> of these
> cars it has often rusted and the problem starts as a
> pinhole leak
> that is often to small to drip much fuel out, but large
> enough to
> have air leak in, thus prevtening the fuel loop to be fully
> purged
> of air.
>
> The 80's cars/vans has a clear piece of fuel line between
> filter
> and injection pump. The idea was to be able to spot any
> bubbles moving
> through the system to help trouble shooting. If bubbles go
> forward when
> cranking, then it is a problem in the supply part of the
> loop. If after cranking/running bubbles move backward it is
> on the return side.
>
> Sometimes the Diesel will eventually start, but take a
> minute cranking
> each time. This is almost always a pinhole leak letting the
> fuel system
>  drain.
>
> Similarly, if it eventually starts, but have drive ability
> problems, air
> in the system can limit the effectiveness of the pump,
> making the motor
> cut out on the uphills (less common symptom, but has
> happened to me).
>
>
> Martin
>
> --- On Thu, 6/11/09, Robert Keezer <warmerwagen@YAHOO.COM>
> wrote:
> > I'm helping a friend get a 1.6 Diesel
> > engine running that had'nt ran since 2004. Success!
> It
> > finally started last night and runs perfect.
> > Well, I thought it should because the car only has
> 61,000
> > original miles.
> >
> > The fuel smelled like varnish, so according to a
> source on
> > the net , I loosened the injector line unions and
> cranked
> > the engine, flushing it with Diesel injector cleaner
> in a
> > can from the filter -end of the line.
> >
> > Tightened back up the unions, stuck the end of the
> fuel
> > line from the filter into the can, sealed the spout
> with a
> > rag, inverted the can and the engine ran perfectly for
> five
> > minutes till it used up the can of cleaner.
> >
> > I connected the line back to the filter, put two
> gallons of
> > fresh Diesel into the tank, put the pump isn't getting
> any
> > fuel.
> > The filter is now suspect.
> >
> > I'm sure those who are Diesel experts here know what
> to do
> > in this encountering this problem.
> > Might  bad fuel have clogged the fuel filter ?
> >
> > It's looking like the owner's car had a fuel supply
> problem
> > all along.
> > I know nothing about the fuel filter /seperator. Is
> the
> > little bolt on top of the filter bracket a air
> bleeder?
> > And how often do you have to drain the filter from
> the
> > bottom?
> >
> > thanks for your input.
> >
> > Robert
> > 1982 Westfalia
> >
>
>
>
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