Non Fiero question, but it's pretty important. On an old 4 cyl diesel, the manual says to do something-or-other to adjust the "lift" on the fuel pump. What exactly does that mean, and does it have any effect on injection timing? I would imagine it's the suction force that the pump creates, but I really don't know. Thanks.

what make of diesel? not one of those old British ones is it?
if it;s old, it is likely a mechanical injector timing setup, but there were a few types, none of which should be bothered by fuel pumps, unless it is one of those ones that the injector pump is also the injector sequencer and is run off the cam gear.
Lift could be output pressure, lift on a pump in American terms means how far it can suck up fluid and still maintain it;s rated output.

Need more input. I LOVE diesels and have worked on just about all kinds. Sounds to me you are working on a Mercedes, they are very particular on all of thier measurements.

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carpe diem

I'm with tjm4fun, think they mean pressure.

Lift is also a term used by old well men when they talk about the pressure of the water. It's an old hold over from the days when the wells had the pump rods that ran to the bottom of the well with a clapper valve on the end of the rod. The water was lifted or pushed up to the output.
When electric pumps came about they just kept using the same terms.
Also sometimes called Head..

Man! I'm getting old...

[This message has been edited by Dodgerunner (edited 07-09-2007).]

on big trucks a "lift pump" is the low pressure pump to gets the fuel to the engine.
from there it either has a high pressure pump and goes to electronicly controled injectors
or straight to injectors that have a pump built into each one and is driven by the camshaft.

but i dont know what your book is talking about.

Ok, I have more information that's actually useful. It's an old VW diesel, I think with an inline injection pump because the fuel lines are in a row? The manual says to loosen the whole pump and rotate it to adjust the "lift". Obviously it's something to do with injection adjustment or timing. I can't find any pictures, but is it possible that this type of pump has cam driven valves and the adjustment is in the "lift" of them?