Military Vehicle Repair: M1009 No Start, military surplus auction, m1009 blazer

Question
I just purchased an 1984 m1009 blazer from a military surplus auction.  All in all it's not in bad shape.  I changed the ignition cylinder as it came w/out any keys, changed the batteries and a fuel line.  The blazer started and runs good.  Unfortunately, after a brief drive and the blazer is turned off it will not start again for several hours.  It turns quick at first then gradually begins to slow. The more you try to crank the slower it turns.  I've checked fuel flow to the filter and fuel flow to the injectors.  After it sits for a few hours you can get in and it will start right up, but does have a large quantity of white smoke from both exhaust. Any insight into this problem?

Answer
On the right/passengers side head, way back near the back end of the head, down just above the edge that sits on the block, there is a temperature sensor.
It connects to the connector on the side of the injector pump.
That connector on the injector pump operates a solenoid inside the pump, that opens a valve in the fuel return hose fitting at the front of the injector pump.
If the engine is cold, that solenoid does not operate, so that valve stays closed, trapping the return fuel inside the injector pump housing, which builds up pressure, and changes the injector timing.
You could unscrew that fitting from the front of the injector pump, and try to start it with the fitting out. It will pump some fuel out there, but won't hurt anything...just be messy. if it starts, you know that is what it was.
Probably need to check for power at that temp sender, or at the connector on the injector pump.(not the one on top, which is the kill solenoid).
I have seen those fittings on the return line get plugged, and keep the timing advanced all the time, which may also be your problem. Look inside that fitting. There is a little tiny check ball in there, that should move when you press it with something like a toothpick. it may look like there is nothing in there, because it is clear plastic, but make sure it moves. That is in the fitting after you remove it from the front of the injector pump.

Van