M1008 air in fuel line

[TedO]

If my trucks sits for a few days, in order to start it, I have to crank it, then open the plastic cap on the fuel filter to let the air bubbles out, crank, bleed, crank, bleed, crank, then it starts. It runs fine, unless I let it sit for a week. Is there a spot between the tank and injection pump where I should look for a leak?

 

[Barrman]

Inside the tank the fuel pick up could have rust holes. The hose from the pickup to the fuel pipe could leak in air. The hose between the pipe and the fuel pump could be the issue. The fuel pump could have a bad diaphragm. The metal pipe from the fuel pump to the passenger side valve cover could be bad, but since it is under pressure it normally isn’t the issue. The hose from the valve cover area to the fuel filter. The fuel filter base is a known source for letting air in the system.

 

[deank]

If none of the rubber fuel lines have ever been replaced, now is the time.

 

[TedO]

Inside the tank the fuel pick up could have rust holes. The hose from the pickup to the fuel pipe could leak in air. The hose between the pipe and the fuel pump could be the issue. The fuel pump could have a bad diaphragm. The metal pipe from the fuel pump to the passenger side valve cover could be bad, but since it is under pressure it normally isn’t the issue. The hose from the valve cover area to the fuel filter. The fuel filter base is a known source for letting air in the system.

Thanks. I have replaced all the lines recently. I am suspecting it is the fuel pump.