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I got the "formula" from a couple of pages out the December 2002 issue of Military Vehicles Magazine, and the author, Pierre Jalving, got it out of one of the TM's that was issued after the ARMY fuel system was standardized on diesel/JP fuels. The author, Pierre Jalving, got confused when he...

You are right, of course... I've got to remember to stop posting when I'm tired... The whole way the FDC works is by measuring the resistance of the fuel to flow through a controlled leak. However, a set of serviceable fuel filters is not going to drop the pressure on the output side of the...

Filters and lines only drop pressure if there is flow going on, and in this test the flow rate is equal to the leakage, so almost non-existent. If you read the sheets I copied from the manuals, they only test the FDC piston shaft for leakage in the rest position... and they use 10 PSI because...

I would argue that you are wrong. -Chuck

Try a quick search on FDC bypass using the search button at the top of the screen. How to bypass your FDC has been covered numerous times, even by me. Or, you could look here: http://www.steelsoldiers.com/deuce/26917-fuel-density-compensator-pass.html#post280745 -Chuck

I got the clue about the booster pump from you, so I should be thanking you. Thanks! At that rate, you soon would have a runaway on your hands. The in tank pump has a lot of capacity, and it will exploit any leak in your fuel system to maximum effect. -Chuck

The troubleshooting manual in the resources section is excellent. Do note, that it is geared to the LDS465, so there are some slight differences... most are just HP, rpm and timing specs, and the IP shown is the G type (IIRC), not the C,D,E types typical of the LD and LDT engines. One thing I...

The FDC is basically a movable stop for the fuel pedal. When you are running a thin fuel, such as gasoline, the stop moves to allow full pedal, and maximum fuel. When you are running a thick fuel, such as WMO, the stop moves to reduce the maximum pedal motion. The idea is the FDC controls the...