2000 7.3 runs awful at 1/4 tank or less??? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 04-06-2009, 08:05 PM Thread Starter
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2000 7.3 runs awful at 1/4 tank or less???

My 2000 F-250 7.3 recently starting running horribly only when it gets to 1/4 tank or less. It will began to run sluggish and then die. It will eventually crank up but still run badly. As soon as you fill the tank its back to running perfect. Any ideas?????
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post #2 of 8 Old 04-06-2009, 08:07 PM
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pull over and purchase fuel.

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post #3 of 8 Old 04-06-2009, 08:07 PM
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Originally Posted by stevenz614 View Post
My 2000 F-250 7.3 recently starting running horribly only when it gets to 1/4 tank or less. It will began to run sluggish and then die. It will eventually crank up but still run badly. As soon as you fill the tank its back to running perfect. Any ideas?????
Your guage is wrong

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post #4 of 8 Old 04-06-2009, 08:14 PM Thread Starter
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It will still crank and run just sounds and feels terrible. It is not out of fuel, I am sure of that.
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post #5 of 8 Old 04-06-2009, 08:17 PM
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Maybe your fuel filter is junk, the bottom of the tank could have gunk in it.

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post #6 of 8 Old 04-06-2009, 08:57 PM
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This is one of the main reasons for doing the in-tank modification (Hutch Mod). There are a number of places that the factory fuel pickup can begin to "suck air", mainly around the fuel mixing chamber when the tank gets around 1/4 full.

ITP Diesel has a nice kit that is cost-comparable to trying to gather up the parts to DIY.

The tank pickup is modified to eliminate the possible areas that will pickup air, the mixing chamber and associated screens are removed and a pre-pump, external filter is added. The leaky quick disconnects before the factory pump are also eliminated.

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Last edited by guzzle; 04-07-2009 at 05:49 AM.
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post #7 of 8 Old 04-06-2009, 09:02 PM
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Your guage is wrong
i learned REALLY QUICK not to trust a Ford fuel gauge.

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post #8 of 8 Old 04-06-2009, 09:18 PM
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Seriously, you are asking for issues.. actually.. begging for problems. You can drop the tank and mod it just to do it and the pre pump mod is awesome....

OR...

Don't run it that low. If someone ran my truck that low of fuel, I'd have my boot in their a$$ for weeks after the fact. Running a powerstroke low/out of fuel will ruin the injectors.

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