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Discussion Starter #1
"Need help" I think i just blew up my cp3 pump on my 2004 GMC lly, truck seamed like it was starving for fuel and wouldn't rev up got back to work and noticed fuel leaking out from under the truck, looks like fuel is leaking from the bottom of the cp3 pump
 

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Probably one of the rubber hoses leaking on the back of it. If it is the pump you can get the Lbz pump thats cheaper then the others. I put the Lbz pump on my lb7 just had to use my regulator.
 

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How aggressive is the leak? Pump might be cracked at one of the freeze plugs.
 

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Discussion Starter #4
Its leaking about a gallon a min, i am sure that the pump is cracked as there was lots of fillings in the valley and there is no hose were it looks like it is leaking.
 
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