Join Date: Feb 2006
Location: North Little Rock, Arkansas
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Re: wiring harness
If the wiring harness got hot or smoked you more than likely have a grounded wire in it. you can test for grounds with an ohm meter on the wires under the valve cover by reading the pins to ground. the outboard pins on each end of the valve cover go to the glow plugs. They will read a low resistance of about 1 to 2 ohms if they are good and not open, a reading of zero ohms would indicate a short to ground. The inner pins on the connector go to the injector coils. Check them for a reading of zero ohms to see if they are grounded.
They wiring under the valve cover can get damaged and might have a ground.
as far as the engine running with all 4 cyclenders on an engine being disconnected, I don't think it would run because of the great cyclinder pressures the engine has to overcome in the dead cyclinders. It might run with only two cyclinders disconnected, but really crappy. If it was me, where you saw the smoke is where I would start looking.
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