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please any help needed. Have a 2000 excursion 7.3
code said glow plugs 7 + 5 out we changed 1-3-5-7 while we had open and cleared codes
truck would not start cranks rough, but no start, pulled codes for glow plug 3-5-7 and a misfire
opened back up cleaned tested and reinstalled the glow plugs, started engine before replacing cover this time, started but extremely rough, let run a minute and it started to smooth out, replaced cover, tried to start, again very rough crank no start
batteries now low so charged them to full still same trying to start
codes are still for 3-5-7 glow plugs misfire pending.
please help I am a full time student and this is the only vehicle we have that holds family.
 

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What u talkin bout willis
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CHECK YOUR UNDER VALVE COVER HARNESS YOU MAY HAVE A SHORT SOMEHWERE OR A BROKEN LINE IT WHAT IT SOUNDS LIKE TO ME
 

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I second that. There is a harness and sometimes it will come un-plugged or otherwise get messed up/chaffed/burned. Ford sells a wedge you can put on that plug to keep it from coming un-done if that's the problem. There's A LOT of threads about glow-plugs and glow-plug related issues on here and plenty dealing with that harness and plug too.
 
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