I don't see yet where you confirmed the status of the timing belts. Before doing anything else, you need to confirm BOTH of the following in this order:
1) REAR BELT IS INTACT (present, no stripped teeth, not excessively loose)
2) REAR BELT TURNS WHEN THE ENGINE IS BEING CRANKED
The first question checks that the camshaft is able to turn the injection pump. The second is an indirect check of the front timing belt and the crank and cam sprockets by seeing if the crankshaft can turn the camshaft. [We will all cross our fingers that you answer "yes" on that one.]
These are both simple visual checks that require no tools or disassembly. The rear belt is visible in plain sight even when its cover is installed (assuming the belt is still there of course). Let us know if photos would help.
Don't go further with any other tests of the fuel delivery system until you have checked this out and can definitively answer YES to both of the questions above.
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86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
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