Purging Air From Fuel System
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Purging Air From Fuel System
New to the Forum...need a little help.
I have a '02 F-350 7.3 w/130,000 miles.
Recently the truck wouldn't start. I changed the fuel filter and it started, ran rough then smoothed out. 60 miles later it quit and wouldn't restart. As it was dying it was knocking and blowing white smoke. RPMs were up and down with no power when apply accelerator.
I dropped the tank (plastic) changed the sending unit, fuel pump and fuel filter.
I also changed the cam sensor as I've read much here about it presenting problems and it was relatively inexpensive.
I need to know how to purge the air from the system.
Also, if anyone has any suggestions as to weather I'm on the right track or not will be much appreciated, Thanks. \
Jack Long Island NY
PS
I purchased a 67 gal. Titan tank thinking my tank was steel. I'm not going to insatll it. Anyone interested I'll let it go REAL cheap. Fits '99-'07 Crew Cab Long Bed.
I have a '02 F-350 7.3 w/130,000 miles.
Recently the truck wouldn't start. I changed the fuel filter and it started, ran rough then smoothed out. 60 miles later it quit and wouldn't restart. As it was dying it was knocking and blowing white smoke. RPMs were up and down with no power when apply accelerator.
I dropped the tank (plastic) changed the sending unit, fuel pump and fuel filter.
I also changed the cam sensor as I've read much here about it presenting problems and it was relatively inexpensive.
I need to know how to purge the air from the system.
Also, if anyone has any suggestions as to weather I'm on the right track or not will be much appreciated, Thanks. \
Jack Long Island NY
PS
I purchased a 67 gal. Titan tank thinking my tank was steel. I'm not going to insatll it. Anyone interested I'll let it go REAL cheap. Fits '99-'07 Crew Cab Long Bed.
Duct Tape Tech.
Joined: Jul 2009
Posts: 2,381
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From: San Antonio Tx.
To purge the air out of the fuel system. Cycle the ignition on for about 30 seconds then off, when you cycle the ignition the fuel pump will run for about 30 seconds keep cycling it for 3 or 4 times, You can open the drain on the fuel bowl to let the air out of the system. After you turn the pump on and it cycles off, open the drain valve, let the air blow out then clost the valve and repeat as needed. Hope this helps
Post Fiend
Joined: Feb 2008
Posts: 10,977
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From: Lancaster, Pa.
Darn, wished it was for a shorty. Welcome to FTE Jack. For your block I think you have to let the air work out itself running. It will spew white smoke, the truck will rock and knock and sound bad until the gets out. At least thats what I did on a big truck back some years. Bob is right for the air in the lines leading to the fuel bowl.
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
Thats the one. Turn it open and cycle the key on and you'll see a steady stream after the air is out. Put a bucket under the area where the fuel is gonna come out.
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Post Fiend
Joined: Nov 2007
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From: Payson, AZ
I bet I'm too late. You probably already made a big mess. I can't beleive these guys didn't warn you.
When you open the fuel bowl drain valve fuel will spray out the drain tube near the passenger side exhaust manifold. Put a piece of tubing over it and run it to a catch container.
When you open the fuel bowl drain valve fuel will spray out the drain tube near the passenger side exhaust manifold. Put a piece of tubing over it and run it to a catch container.
Cargo Master
Joined: Feb 2005
Posts: 2,837
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When the CPS dies it usually caused the truck to quit completely. If it is "failing" and not completely "failed," the truck will die but you will be able to crank it back up. Once it fails completely you won't be able to crank it up again. Also, smoke changes are no indication of CPS failure.