Fuel delivery problem

[Kerplunk]

My 67 Belvedere hates me. I had an issue with the alternator, finally got the car back together and it wont start, its not getting any fuel.

I disconnected the fuel line at the pump, and turned the motor over, no fuel.
So I replaced the fuel pump with the old one, which I know is good, and still no fuel, so I guess its not the fuel pump.

Where should I look next, my fuel gauge recently packed it in a couple of weeks ago, I was sure I had enough fuel, but added a couple of gallons to be sure.

Thanks in advance for any suggestions

Edit: I pulled the sending unit and it looks OK, looks like the previous owner put a new sock on it, the float is filled with fuel, so there is the gauge problem.

 

[dave5237]

My 67 Belvedere hates me. I had an issue with the alternator, finally got the car back together and it wont start, its not getting any fuel.

I disconnected the fuel line at the pump, and turned the motor over, no fuel.
So I replaced the fuel pump with the old one, which I know is good, and still no fuel, so I guess its not the fuel pump.

Where should I look next, my fuel gauge recently packed it in a couple of weeks ago, I was sure I had enough fuel, but added a couple of gallons to be sure.

Thanks in advance for any suggestions

Edit: I pulled the sending unit and it looks OK, looks like the previous owner put a new sock on it, the float is filled with fuel, so there is the gauge problem.

I guess start back tracking. Can you pull gas up to the fuel pump. If you can get gas that far it is a problem from the pump to carb. The rod has to be in there just right ( on my 440 ) that you probably know. Pumps off the cam lobe. Is there a possibility it may be the lobe? You got to get a pump that you 100% know is good. I thought my old one was good too. Guess what. It wasn't. Got a new pump and worked fine. Good luck.

 

[kidmopar]

Be sure the rubber line coming out of the tank isnt cracked or dry rotted. It would suck in air and not siphon fuel into the pump. Fuel pump pushrod could be wiped out even if the pump is good. Its happened to me.

 

[Photon440]

Be sure the rubber line coming out of the tank isnt cracked or dry rotted. It would suck in air and not siphon fuel into the pump. Fuel pump pushrod could be wiped out even if the pump is good. Its happened to me.

X2 on checking the line by the tank. I had an old car that had a hose so old and soft that the suction from the pump sucked the tubing flat together, and no gas got through at all.

-=Photon440=-

 

[Meep-Meep]

If the lines are clear I bet the push rod is worn to the point it's not fully actuating the pump arm. This not an uncommon problem.

 

[Garys1969RR]

To help isolate the problem, hook a hose to inlet of fuel pump, and into a can of gasoline. Put another hose on the outlet side and stick it into the can of gas. Then have an assistant crank the motor while you watch to see if fuel is flowing. If no flow, then its either the pump or the pump rod. You can also remove the pump and move the lever by hand. Usually have to put it in a vise, and put a pipe or crescent wrench on the pump lever as the they can be hard to move. Good luck.

 

[1toolguy]

How full is your tank? Are you sure the pickup is fully submerged in fuel?

If the filler neck is behind the rear license plate you can pull the filler neck and shine a flashlight (peferably explosion proof) into the tank and see if the pickup is almost resting on the bottom. It's difficullt to see but it can be done. An easier way to test it is to add more fuel to the tank to get it to 1/4 to 1/2 full (no more that that though because you'll need to pull the pickup out to correct it and it'll spill), and see if it starts and runs.

Also does your fuel contain ethanol? The E10 they sell here in FL was softening the old style (SAE 30R7) fuel line allowing the fuel pump to suck it shut. I switched fuel injection hose (SAE 30R14) that lined and have solved my fuel delivery issues.

 

[70rr-brian]

My money is when you were putting the alternator on you either pinched or smashed the fuel line running up near the alt mounting brackets. That would be the first place I would look under the circumstances.

 

[Peter]

Push rod worn, me thinks, like mentioned above. I replaced the fuel pump, like you. 2x. I was getting decent fuel pressure then all of a sudden little to no pressure. It was like a freaking gremlin. Then my mechanic replaced sending unit, and replaced fuel lines to make sure. Same problem. Finally, I just added a holly blue electric fuel pump with regulator. Problem solved.

 

[Kerplunk]

Thanks guys! I'm going to check everything over, replace the rubber hoses when I do the float in the sender. I did drop a fuel line into a Jerry can, and got her to go. so at least I know where to look.