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since you can get new ones for $50 i don't really see why you would bother with an old one.

if nothing from the bleeder, then the in tank pump is not pumping. you say the shut off could be stuck, have you checked it?

without the info from the boost gauge and an accurate pyrometer, you are just guessing. not an effective way to diagnose a problem

jsthnt, i don't see where you say what the boost pressure is when the egt is high. just because you have a turbo doesn't mean it is working correctly or all the time. black smoke and high egt means too much fuel or too little air. too little air means low power.

No? Why not? If you bypass the FDC, the IP thinks all fuels should be injected in the same volume with no regard for the energy in each type of fuel. I would just leave the FDC hooked up if you expect to have a variety of fuels, keep in mind it is the fuel that cools and lubricates the HH.

the more it is screwed in the less fuel at low to mid range. I just remove the screw entirely for best power. if the screw is in too far there will be a terrible stumble when starting out from idle in a low gear.

to be accurate and for better understanding, bypassing the FDC removes the control of the FDC on the govenor and therefore may give more consistant operation of the injection system. if it is sticking, fuel rate may be all over the place, but this does not seem to be a common problem. mostly it...

just guessing is not going to get you far. get the manual out and go through the trouble shooting section for low power. there are many things it could be and unless you are an experienced diesel mechanic, you will miss most of them. if it starts well I would say the HH is still ok, but running...