Dies at at stop signs and does not want to start back up. - Diesel Forum - TheDieselStop.com
7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

 
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post #1 of 8 (permalink) Old 10-27-2015, 01:36 PM Thread Starter
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Dies at at stop signs and does not want to start back up.

Ok I have a 94 7.3 f250 was having trouble getting past 40mph without sputtering or during now that I replace the fuel filter and the return lines the truck will run good and get up and go great but will die if I come to a quick stop and then will have trouble starting
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post #2 of 8 (permalink) Old 10-27-2015, 02:35 PM
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how much fuel in tanks?
i would be replacing the lift pump with a electric fuel pump.
and installing a fuel pressure gauge on the filter head.

2001 F250 CCSB 7.3 4R100 4WD 4" LIFT 35's
1998 E350 CLUB WAGON, 7.3 AODE 2WD
1994/90/86 F24doorBronco
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post #3 of 8 (permalink) Old 10-27-2015, 05:07 PM Thread Starter
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3/4 in main nine is the second.. How/ where do I get the electric pump and install it. Also what about the pressure gauge
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post #4 of 8 (permalink) Old 10-27-2015, 05:08 PM Thread Starter
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None not nine
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post #5 of 8 (permalink) Old 10-27-2015, 06:12 PM
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If it had a dirty fuel filter, then there is a chance that it got to the injector pump. Is there any water in the fuel? Water en-trained in the fuel can cause what you're seeing, lots of other fuel related problems too. Filters can only take out so much, then they rupture, and send dirty fluid throughout the entire system that they are supposed to protect. Dies on a sudden deceleration, is usually the result of a stuck fuel metering valve, but it usually starts right back up. Does it act like it ran out of fuel? I would work from the fuel filter back to the tanks until I found a leak. Good fuel at the filter, then I'd check the injector lines at the injectors and see if there is anything there. If not then I'd check the fuel shutoff solenoid. Solenoid good, then I'd be looking long and hard at the injector pump. If you have fuel at the injectors then the injector pump isn't putting up enough pressure, or all of your injectors have failed at exactly the same time (not likely). Since it starts and runs good at other times I would rule out low compression.

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post #6 of 8 (permalink) Old 10-27-2015, 07:12 PM Thread Starter
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Yes it acts like it ran out of fuel... No spitting or sputtering just dead.. What do I use to check fuel pressure and the shutoff valve?
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post #7 of 8 (permalink) Old 10-27-2015, 07:41 PM
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Pull the schrader valve out, and put a gauge in its place. Pressure should be somewhere around 4 to 6 PSI.

1993 F-350 crew cab non-turbo 5 speed transmission
35 years a mechanic on large stationary engines natural gas and diesel fired, and other industrial equipment.
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post #8 of 8 (permalink) Old 10-27-2015, 09:08 PM Thread Starter
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When running?
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