[Vwdiesel] Solenoid valve on turbo-line test *RESULTS*

[Kenneth E. Oldrid]

Mike,
it sounds to me as if the amount of fuel delivered to the injection pump might
be turned down. As I understand it, the turbo will only be felt if more fuel is
delivered. So,the turbo could be functioning properly, as well as the aneroid,
but the fuel screw is turned down to the point where no extra power s gained by
the increase air volume.
Does your car smoke under partial or full throttle? If not, especially under
the second, i would try turning up the max fuel screw on the injection pump 1/8
turn at a time (very sensitive adjustment!).
One of my 1.6's has this aneroid on the pump. It is a non-turbo in a vanagon.
PO said it cam from a 91 jetta. Could this be a turbo block/head, or did the
na's come with this aneroid? It seems to be connected to some vaccum line or
something, not sure on that.

Ken

Quoting Mike & Coreen Smith <ve9aa at nbnet.nb.ca>:

> This is a multi-part message in MIME format.
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> [ Picked text/plain from multipart/alternative ]
> Forgive me if my terms are not the correct ones. I remind the readership my
> knowledge of diesels and turbos is slim to none (LOL)
> re: 1.6L Jetta Turbo diesel (1988) and ongoing turbo testing.
>
> Today I installed a remote solenoid valve on the small "turbo line" (1/4"
> line that goes to from the turbo pump to the spaceship(hahah) aneroid
> valve(?) on top of my injector pump.  I made quite a few "A" vs. "B" tests
> with the valve open or closed and could not detect even the slightess bit of
> difference between either while driving under load, high revs, lows revs,
> uphill, downhill, flooring it. (well, you get the idea).  I know from a
> previous test there is a good 8+PSI or better on this line under load and
> high revs. (10PSI if I am really redlining it)
>
> So..........what does this test tell me (us) ?
>
> Does this aneroid simply control "extra" fuel going through the injector pump
> or ??
>
> By having no "extra fuel" (if this is what it does), that presumably means no
> extra "boost", huh?
> What about the extra air being injected into the cylinders by the actual
> turbo pump itself?  How does it tie into this equation.
>
> I really have to win one of these auctions for a Bentley book on Ebay, <g> or
> have someone explain to me how this whole system works.
>
> My CDN 2c worth , from NB,
> Mike
> P.S.-MY ULTIMATE GOAL IN ALL OF THIS IS TO SIMPLY KNOW WHETHER OR NOT THE
> TURBO IS WORKING AND TO ACHIEVE TO ABSOLUTE **BEST FUEL MILEAGE POSSIBLE**.
> HP IS SECONDARY.
>
> Mike, Coreen & Corey Smith
> 271 Smith Rd
> Waterville, NB
> E2V 3V6
> --
>
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