rough running after new o rings and more obs 7.3 - Ford Powerstroke Diesel Forum
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Old 12-14-2013, 09:31 AM
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rough running after new o rings and more obs 7.3

ok new to forums so bare with me but thought i would try
my 96 f350 7.3 needed injector o rings and a fuel pump and when i started pulling it apart i noticed at every connection going to the valve covers the connectors were falling apart also my wiring harness going through the fuel filter canister was falling apart(it had been leaking fuel on the wires for a while) also the orange air intake boots were shot.
sooo i ordered up new intake boots from riffraff an entire new fuek filter canister with harness(motorcraft) alliant injector o rings, deisel rx glow plugs, alliant fuel pump, and whatever valve cover gaskets napa gave me and wired on the new connectors
after i did the o rings i sucked as much oil out of cylinders as i could then turned motor over by hand and it turned good. finally got truck running and drove about 50 miles running like crap whole time, no power rough idle long cranks. got home and noticed a fuel leak, i forgot to tighten a rubber fuel line. i drove it again about 5 miles truck acts the same. checked hpop and its full. do you think that with the fuel line leaking it pulled in air and i need to repeat the driving process? only other thing it thought was my wiring job was a fail. if i unplug any one of the four connectors going to valve covers it will die. probably left some info out... thoughts? also there is a check engine light which i figured would be on due to cranking motor over with injector/glow plug harness undone but i have hooked 2 scanners to truck and neither one is picking up a fault code

Last edited by troylj; 12-14-2013 at 10:18 AM.
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Old 12-14-2013, 11:45 AM
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drove it some more, still the same. i dont think there could still be any more air in the system. going to pop valve covers off and check connections. feels like its not running on all cylinders. maybe check manifolds with temp gun?
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Old 12-14-2013, 07:53 PM
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talkin to myself here but figured id give an update. checked the plugs going to valve covers one by one unplugging them and only one didnt make a difference. so pretty sure the one closest to the turbo has a bad splice from harness to connector. i must have crimped the splice on the rubber instead of the wire itself. anyhow, im gonna ditch those crimp on splices and solder them together
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Old 03-26-2014, 12:19 AM
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any luck with it yet
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