New Fuel Pump - Now Hard Starting

If your mechanic didn't change the fuel filter when he changed the pump, do it b4 you are buying another pump.

Do you hear the pump run when you first turn the ignition on?

The fuel pump is wired in parallel, one circuit is thru the fuel pump relay, the other is thru an oil pressure switch.

If the relay circuit fails, the fuel pump will still eventually run if you crank the engine enough to build some oil pressure and close the switch.

JR,

I just double checked the bill and the mechanic did change out the fuel filter. Maybe it's something else easy?

I played around with starting the truck and if I hold the key in the run position for several seconds before starting it I hear the pump running and then it fires right up! If I just start it regular with no delay at the run position it takes 8-10 seconds to start. This is starting to worry my wife who is the main driver of the truck! thanks

Sounds like your fuel system is losing pressure. Could the foot valve on the pump be faulty? (I'm guessing there has to be one) Pete

I've replaced a couple of these. Usually when you start having this problem right after you change the pump, it is a defective pump. I know its hard to shell out the money, but you should only use a Delco pump the other after market ones are junk. I learnt the hard way by having to pull the gas tank out about three times.

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Some things your just better off getting Original Equipment! Sometimes it's even cheaper. If you have a Tank Pump that's a hassle to replace, might as well go get a O.E. because you sure as hell don't want to replace it any time soon. I sure in hell wouldn't want to pull my gas tank down once again to replace it once again. If the last one lasted you 9 years and however many miles, that's not bad.

Sounds like a defective fuel pump. They are cheaply made, no matter where they come from. Hopefully, your mechanic has a good warranty, on their work. Mine replaced it, at no cost. Since the pump was defective.