[Vwdiesel] injection pump - lift pump possibility??

[gary]

Will,

Ditto on making sure your lines are in good shape.

The only time I've seen or heard of people using a lift pump was to
squeeze a few more miles out of a pump with leaking front seal.

A lot of water in the filter is definitely not a good sign. Water will
wreck a pump faster than you can blink an eye.

Another reason why a lift pump is not a good idea in you scenario...
There are two pumps in the injection pump. A vane lift pump, and the
main injection plunger. The lift does two jobs; 1st, it pulls fuel from
the tank, through the filter, and supplies the main pump; 2nd, it
pressurizes the body of the pump. As this pressure builds over RPM, it
changes(advances) the "start of injecting" timing. Granted, you may get
the engine to start and run, but it will never run right.

That said, I have come across many used pumps in the 'yards. Most of the
diesels in my travels have died due to bad maintenance, and overheating.
In San Diego, Ecology Auto Parts, would sell these for $50. No
affiliation, yada... I have spent many an hour there and quite a few $.

-Gary in Oviedo
1997 Passat TDI



On Sun, 2003-08-03 at 02:06, Will Taygan wrote:
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> Okay, I just picked up an 82 Jetta 1.6 NA.  The wiring is way messed up..=
 more on that later.
>
> Glow plugs shot, it'll start with ether and will idle okay..  I'm working=
 on it.
>
> The injection pump seems to be the issue.  NOTHING coming out of the retu=
rn banjo fitting on the pump, very little pull on the pump, it'll idle but =
won't pull through the air in the line from changing the fuel filter.
>
> The old fuel filter was almost completely full of water (ugh.)
>
> The $$ for a new pump isn't in the cards.  How has anyone's luck been at =
junkyards?  Ever find a good one?  Are what years are interchangeable with =
an 82 1.6l NA Jetta, I assume any other 1.6l NA, how about the 1.9l NA or 1=
.5l NA?
>
> ** Has anyone tried putting a lift pump onto the VW system to get the fue=
l through the pump?  Will this work?
>
> I don't see any leaks from the injection pump itself.
>
>
> Thanks,
>
> Will Taygan
> 81 vw pickup 1.6 NA
> 82 vw jetta 1.6 NA
> Concrete, WA
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