Fuel pump

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Vmax44

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Mar 28, 2017
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Pascagoula
I have a project Vmax and the fuel pump did not come on when I turned the key on for the first time It will run when hooked directly to a battery. Does anyone have any suggestions about what would cause this and also I do have the fuel pump disconnected from the fuel tank because of rust issues until I can get the tank cleaned.
 
The easiest way to establish what the issue would be follow the diagnostic flow-chart in section 7.51 of the Service manual.
 
I had issues with my fuel pump also. Mine would run fine when power was supplied directly. After several days of diagnostics, I discovered it was the fuel pump relay that was the cause. I swapped out the relay and it has run perfectly ever since. The fuel pump relay is the first relay at the front, under the left side air scoop.
 

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