Stalling out

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Jun 23, 2007 | 08:43 AM

sixstring610

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Joined: May 2007

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Stalling out

I have a 1973 F-250 with a 360, when I am on the highway after approx. 20 miles or so the truck seems like it runs out of gas I pull over it starts back up and goes fine untill I reach 60 mph then seems like it runs out of gas again.
On the back roads I never have a problem..

Any suggestions?

Thanks

Jun 23, 2007 | 10:36 AM

79_250RangerLariat

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Joined: Aug 2002

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How's your fuel filter?

Jun 23, 2007 | 01:02 PM

Jermafenser

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Joined: Jul 2001

Posts: 4,956

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From: MD

Wrong type of gas cap
Collapsed and/or rotten rubber fuel hoses
Pinholes in steel fuel lines
Pickup screen (tank) clogged
Weak fuel pump
Fuel filter clogged
Carburetor float incorrect

Jun 23, 2007 | 05:37 PM

Mrcorey5

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Joined: Apr 2007

Posts: 167

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From: Topeka, Kansas

I am fighting the exact problem. It never done that crap intil the summer temps got 85+. I moved the steel fuel line away from the short rubber hose by my water pump and it helped a little. I think that we might be fighting vaporlock.I am running the same year and same motor as you are.

Jun 23, 2007 | 05:46 PM

Mrcorey5

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Joined: Apr 2007

Posts: 167

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From: Topeka, Kansas

You might also check to make sure that your gas tank vent is not obstructed. There is a chance that your truck is running good until the tank builds up too much vacuum for your fuel pump to work right. The next time it acts up try taking off the gas cap temporarly to see if this resolves your issue.

Jun 24, 2007 | 12:15 PM

trinogt

Cargo Master

Joined: Apr 2001

Posts: 2,364

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From: Eustis FL

This happened to me before. I replaced the electronic ignition module with a Ford unit and it went away.
Might want to consider one from a junkyard truck, so if it doesn't happen to fix, you aren't out much money, and you get a spare unit in the end.

I went through two aftermarket units that lasted a couple months, but when going back to a Ford unit, problem never came back.

Jun 27, 2007 | 05:55 AM

sixstring610

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Hey Mrcorey5, I think you were onto somthing.... I re routed the fuel line and so far so good. I think I was having a vapor lock issue.

Thanks for the help

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Sep 2, 2007 | 06:53 PM

sixstring610

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think I got it

A while back I posted that my truck would somtimes act like it was running out of gas however I would have plenty of fuel in the tank.... I tried everything I thought it might be vapor lock.... Fuel pump...collapsed line but no after every time I tried somthing it would eventually happen again. Well yesterday I took the sending unit out (1973 Hi boy in cab tank) and looked in with a flashlght, at first I didnt see anything.. I diconnected the fule line and blew air threw looked agfain and there it was... a cardbord top from some sort of additive (dry gas or somthing) I fished it out and didnt have a problem all day yesterday...I think I got it!

Thanks for all the help and advise on this!