kcn,

Sounds like you're making some progress. As I suspected, your car has probably been converted to a parallel glow plug system. Before you go any further, put a voltmeter or test light on each plug individually with the key on to ensure that you have about 12 volts at each individual glow plug. I am assuming that you have individual wires to each glow plug, rather than a wire that daisy chains from one plug to the next. If you have 12 volts at each individual plug, I think you're glowing okay.

Now that you have checked all glow plugs and have ensured that they are glowing, if the car still doesn't start, you need to crack open each line at the injector one at a time while someone is cranking the car. You should see fuel dribble out of each one. If you see fuel dribble and you have cracked open all of them in turn, and it still doesn't start, you need to check compression.

If no fuel dribbles when the lines are cracked open, make sure you have fuel in the main filter. Use the hand pump until you here a hissing at the top of the main filter.

Good luck,