B5 biodiesel probably isn't a high enough percentage to have much of an effect on the seals, but filling the pump with any kind of fuel will help to get the air bled out. If the vane pump is full of fuel and you have the line nuts at the injector unions cracked it ought to be able to pick up a prime and start running.
Pumps can be rebuilt but it's not a DIY kind of job. They're not like a carburetor where you can just get a rebuild kit and do it on your workbench -- a lot of major testing and calibration equipment and special tools are required. Best to let a good diesel shop do it if you want it to be done right.
Jason, I had never seen a stop valve come apart like that, interesting to know it can happen. Wonder if the bits got all over the inside of the pump. That's the '83 manual trans car from Texas you're talking about, right? What's its status now?
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86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
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