i have a 2000 GMC jimmy it wont start unless i add fuel to the throttle body?

Ern

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even then after the fuel is gone it stops..the fuel pump sounds like its working i replaced the fuel filter which the original one was really clogged.i did srpray water over the engine block could that have effected something.but it ran for a couple of hours after that then it just would not start it cranks over fine and i pressed down on the valve on the fuel lines to check pressure and it seems its working???
 
Pump weak insufficient Fuel pressure Repl F/Pump
 


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