02 F250 Rough Idle with shaking and rattling motor - Diesel Bombers

Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

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Old 03-23-2010, 04:21 PM
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Join Date: Jan 2009
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Default 02 F250 Rough Idle with shaking and rattling motor

I have a 2002 f250 7.3 and it used to shut off while running. I replaced the fuel pump fuel filter and 4 injectors because that is what the computer showed. It does not shut off anymore but it idles and runs rough. The fuel pump is now very loud and when i start the truck the motor starts knocking really bad.
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Old 03-23-2010, 04:47 PM
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Join Date: Sep 2007
Location: Bend OR
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Sounds to me like your throwing money at it...

Slow down.

First thing you need to do is run a buzz test and contrubrution test. Then do a KOER test... I dont know what code you took as meaning 4 injectors needed to be replaced, but that right there sounds like a UVC (under valve cover) harness issue.

Pump being loud is completely differant issue.
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Old 03-25-2010, 05:24 PM
Join Date: Mar 2010
Posts: 3

i would check your cam sinser that can caus lots of problems
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