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Appreciate that! Now it makes sense. I have the TM, all 2" of it. Something to read when I get that undisturbed quite time. Had a basket 1965 Panhead in 70 that went together courtesy of reading the Haynes and Chilton manual. I'm sure the TM is more informative for the M923.

Where is the Injector pump. Looking at the High Pressure pump it didn't look like an injection pump. I was told that the mechanic for this truck said it was electronically fired via computer in a black box on the firewall. I know on the Turboed M923A2 I can recognize a IP right away but on this...

Took me awhile to log in. I guess I went from "WTFOver" to "Over". I go by that because years ago one of my old friends that was in Vietnam used to say "Wiskey Tango Foxtrot Over, that's radio talk". But Over will do. Anyhow we found the problem. My son and I found a leak in the old hardened...

Thansk! That's what I needed to know. Looks like the pump is bad. The seller is sending me one so I can replace it. All fuel lines, returns and vents are good. Thanks again!

So the only pump that draws fuel from the tank is the one bolted to the air motor on the engine. This is the high pressure pump ie the injector pump, correct?

Reset that. Close then opened the lever. Electric fuel pump in tank?

According to the tm there is a star washer between the air pump and fuel pump. Is the fuel pump the IP? Is there a fuel pump in the gas tank? As I mentioned there was very little suction when we disconnected the line to the pump that is attached to the air pump.

Fuel Pump problems: I too just picked up a M923 nhc-250. It was driven here about 320 miles from CA to AZ. The former owner shut it off then when we hopped back in it, fired it up it died. Would not start. We checked the fuel tank, fuel filter and air filter. In the end we disconnected the fuel...