[Vwdiesel] Priming a pump

[Tad]

At risk of sounding like a smartypants... is the injector-cracking
necessary?  If the cylinder is firing, doesn't that mean that the line is
purged of air, since any air would prevent the injector from opening due to
its compressibility?

On Sun, Apr 29, 2012 at 4:21 AM, Bryan Belman <dieselwesty at yahoo.com> wrote:

> I do the same but use a mighty-vac to do this.  Pull fuel into the pump to
> fill it via the Out banjo and once you have it full, put the correct Out
> Banjo back on and it will start very easily assuming timing and everything
> else is setup properly.
> once it is running, crack each injector one by one with a rag on it to let
> some fuel out.  This will help purge any trapped air in hard injector lines.
>
> Make sure that you set your timing with the timing advance cable knob
> pushed all the way in towards the dash.  !!
>
>
> Bryan Belman, Pt. Pleasant, NJ
> 04 Jetta Wagon TDI PD, 100hp, 5sp -- running :<)
> 92 Jetta 1.6 Eco-Turbo Diesel, 5sp -- running :<)
> 82 Diesel Westy 1.9NA -- running :<)
> 70 Type 1 stock Elm Green Beetle -- Under Restoration :-)
>
>
> ________________________________
> From: Andrew .Libby <libbybapa at gmail.com>
> To: Stephen Kraus <ub3ratl4sf00 at gmail.com>
> Cc: vwdiesel <vwdiesel at vwfans.com>; cosborn at epix.net
> Sent: Sunday, April 29, 2012 12:27 AM
> Subject: Re: [Vwdiesel] Priming a pump
>
> I use a spare IN bolt in the Out bolt hole along with a spare IN fitting
> and an outboard primer bulb.  It pulls the fuel right through the filter
> and pump.  Once there is a smooth flow I replace the OUT bolt and fitting
> and without cracking the injectors it typically takes 10-20 seconds of
> cranking to fire up.
>
> On Sat, Apr 28, 2012 at 8:45 PM, Stephen Kraus <ub3ratl4sf00 at gmail.com
> >wrote:
>
> > Open the return fitting and trying cranking, it SHOULD help pump it
> > through.
> >
> > On Sat, Apr 28, 2012 at 9:34 PM, <cosborn at epix.net> wrote:
> >
> > > What is the best way to prime my bosch pump?  I have fuel in the line
> > from
> > > the filter to the pump, but I do not get any fuel to the injectors when
> > > cranking even after I loosened the injector pipes.  Should I pour some
> > fuel
> > > into both fittings (inflow and return)?
> > > Craig
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