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Old 11-19-2012, 03:50 PM
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Join Date: Apr 2004
Location: CC, TX
Posts: 771
603 injection pump failure ?

I pretty much give up on this one...I'm not getting any fuel out of the injector lines. the car ran great and suddenly one day would not start. Not even a sputter. Not a gradual starting problem but it went from perfect starting to nothing in an instant.

I think the injection pump has completely failed internally or something has sheared or broken.

The lift pump appearsto work and fuel comes out the fuel lines going to the IP. But no fuel seems to return from the IP or come out the injector lines.

The vacuum controlled fuel shut off mechanisim has been disconnected and then removed..not any help...it tests good anyway.

I removed the ALDA thing on top at someone's suggestion but not sure what I'm looking for.

How much fuel should the lift pump move? I guess maybe it's possible its not moving enought to supply the IP???

might be selling a "project wagon" soon if I can't get it running.

I need a schematic of the IP to see how it works.
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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5
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