Question about 1991 Ford F250

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1991 F250 7.3L Diesel stalls and then restarts.

Just after filling up my tank my truck stalled. I waited a few seconds and tried to start and it started right up. This never happened before. What could be the problem?

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  • thomaseagle May 11, 2010

    did you drive to the local truck stop on fumes? do you have two tanks?

    What I think may have happened is that you had used all the fuel in the tank and most of the fuel in the lines before you shut it off thus sucking up some air into the lines. After your fill up there was just enough liquid fuel ( and pressure ) in the injection pump to restart and run for a bit until the air got through and it stalled for lack of fuel. Because it had run for a moment the mechanical fuel pump was able to start refilling the lines so when you went to restart it after the stall there was now liquid in the lines and especially if you waited a moment before cranking then the electric fuel injection pump could take that and pressurize it. also, because the engine was warm would have made it easier to restart even if it had to crank a little bit.

    A similar scenario could happen upon switching tanks if one had been bone dry and had filled it then switched to that tank after filling and that slug of air hit the injectors and thus caused a stall.

    Did your problem repeat itself?




  • thomaseagle May 11, 2010

    did you drive to the local truck stop on fumes? do you have two tanks?

    What I think may have happened is that you had used all the fuel in the tank and most of the fuel in the lines before you shut it off thus sucking up some air into the lines. After your fill up there was just enough liquid fuel ( and pressure ) in the injection pump to restart and run for a bit until the air got through and it stalled for lack of fuel. Because it had run for a moment the mechanical fuel pump was able to start refilling the lines so when you went to restart it after the stall there was now liquid in the lines and especially if you waited a moment before cranking then the electric fuel injection pump could take that and pressurize it. also, because the engine was warm would have made it easier to restart even if it had to crank a little bit.

    A similar scenario could happen upon switching tanks if one had been bone dry and had filled it then switched to that tank after filling and that slug of air hit the injectors and thus caused a stall.

    Did your problem repeat itself?




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Hi Cobra,

Some water in the tank ?

Kids / snowball in tank ?

See how it goes, hopefully it might never do it again !

Good Luck !

Please give me a FixYa Rating....I need to be a Guru !

John.

Posted on Feb 04, 2009

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Has anyone experienced this before?


Engine Stalls

taken from:
http://flashoffroad.com/Diesel/troubleshoot/troubleshoot.htm
Here is an easy way to zero in on a stalling problem.
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