1978 Delta 88 with the Olds 350 gas engine.

Last year just before putting the car away for winter storage, the original fuel pump died on me. I replaced it with a Delphi pump from rock auto and drove it a couple days. Then it went into storage. I took the car out of storage a few weeks ago. On the way home the new fuel pump develops a major leak. Not leaking from any of the fuel lines, but pouring gas out of the body of the pump. so I had it towed home and replaced the Delphi pump with a new Napa branded pump. I test drove it that day, and it drove excellent. Good idle, good power.

Today I go to try the car again after two weeks. And it doesn’t want to start. This is a car that in the past has fired up after five seconds of cranking even after having sat for 10 years one time. If I pour gas into the car bowl, it will run for a while and then die. No gas is leaking anywhere. The only idea I have at the moment is that perhaps when the previous fuel pumps diaphragm ruptured, maybe bits of rubber got sent upstream and have clogged the fuel filter at the carb? But would it really be so clogged that it doesn’t even want to idle? Any better ideas? Brian.

 

My 2c

Disconnect the lines at both ends and blow air through them.
Do you have an in-line fuel filter, check that as well as the filter in the carb.
Could have sediment in your tank building up on the sock filter.

 

I would check a couple of things. First make sure that the rubber lines from the tank have not deteriorated and are either leaking or collapsing when the pump us sucking through them. The other is one of the steel lines may have rusted through with a pin hole and the pump is just sucking air.
Other than that you may have gotten some junk into the carb and clogged the needle and seat.
Take the carb line off the pump and see if it's actually pumping before you replace anything else.