anybody figure out why my good running injection pump quit pumping while I was changing the engine.it is getting fuel to the pump and the solenoid is working. it is a 90 engine put in a 89.
:mad: I took a good running 7.3 out of 90 f450 and put it in a 89 f350. The pump is getting fuel and is filling up but wont pump to the injectors. Will the pump pump with the top off ? I think the solenoid is working it did in the other truck. What is wrong?
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