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I put biocide in the tank, and let it sit a while, weeks! I've blown back to the fuel tank from the supply and also from the return from the engine side with both disconnected and I got fuel each time returning from the tank. (cap closed). I've hooked up a separate fuel supply, ala the diesel purge unit, and I get the car to start only breifly with a thimble's amount of fuel. This is also the case when I had the car's fuel supply
connected after priming the fuel line with the factory hand pump.

I wondering if there is a possibility of the injection pump or injectors being gummed up and keeping the car from starting.

I was going to pull the strainer from the tank, and also check for collapsed hoses from the tank, but with the car not running on the separate fuel source, I'm now under the impression it's foward of the fuel lines.
Any ideas out there? Can I blow compressed air into the injection pump? and through the lines into the injectors without causing damage?
Mike