no gas at carb after new fuel pump

[WarbirdAL]

Do I need to prime the new mechanical fuel pump on this 1438 cc that has been sitting (without fuel in the tank) for 34 years? The engine fires and runs for about 5 seconds when I use some starting fluid and also when I pour some gas into the carb, but the fuel pump wasnt pumping any gas. Replaced with new pump and still no gas coming up to the carb.

Shouldnt turning over the engine many times pull the gas up to the pump? or do I need to do something else?

[maytag]

prime it, Al! Prime It!

[majicwrench]

Oh my gosh so many things could be wrong in the tank or lines. Pump should not need primed if everything else is in reasonable shape. Soo many things. "T" a vacuum gauge in before the pump and crank engine ( or piss fuel in) and see what vacuum gauge reads when engine spinning.
keith

[bradartigue]

Do I need to prime the new mechanical fuel pump on this 1438 cc that has been sitting (without fuel in the tank) for 34 years? The engine fires and runs for about 5 seconds when I use some starting fluid and also when I pour some gas into the carb, but the fuel pump wasnt pumping any gas. Replaced with new pump and still no gas coming up to the carb.

Shouldnt turning over the engine many times pull the gas up to the pump? or do I need to do something else?

Sitting that long I would guess your float is stuck and fuel can't get to the carburetor. If you unhook the hose from the pump to the carb and crank the motor does it pump gas? If so then rebuild the carburetor, replacing the needle & seat & float.

If not then get a small container with gasoline and run the pump input line into the container. Crank the car, it should drain the container and the car should run.

If still no then you have a bad pump, the wrong pump, or a broken aux shaft (I seriously doubt the aux shaft is to blame).

[WarbirdAL]

Thanks, yeah I had the carb line off from the pump and nothing was coming thru the line. I will try the cup of gas thing. I just put in a new pump. I will check that.

[psg]

Are you confident the fuel line back to the tank is clear? can you blow air through the line and hear the air bubbling in the tank. Have you tried pressurizing the tank to make sure gas will pass through the line by jerryrigging a gas tank cap/cover and an air compressor. it doesn't take much pressure to move the fuel if the line is clear.

[Danno]

don't be offended. I used to do computer support at the university...

Are you sure there is fuel in the tank?

[FiatBen]

don't be offended. I used to do computer support at the university...

Are you sure there is fuel in the tank?

Danno, I had to laugh. I remember in tech school that one of the first lessons in trouble shooting someone's PC was to make sure the computer was plugged in!! Most people would be surprised how often something isn't working because it isn't plugged in/filled up.

[WarbirdAL]

turns out the lines were plugged with old fuel and who knows what else. Thanks for the assistance and especially Danno lol. I ended up using an electric pump and reversed the flow pumping new fuel from a 5 gal tank back thru the lines. It cleared it up along with seafoam. Never tried the seafoam it took 2 cans to get it cleared up.