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post #1 of 7 Old 01-13-2010, 05:01 PM Thread Starter
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Unhappy 2000 7.3 no start

i have a 2003 f350 7.3 that cranks but will not fire! i have tried everything i know to get it to start. i have changed the cps, pcm and had it flashed, the high pressure oil pump, checked the valve cover gasket harness(ohm test showed both were good), and checked all the fuses(all check good). i have no idea what else it could be. with the valve cover off on the left bank while cranking i have noticed that the last two injecters are pumping out oil through what i think are the waste outlets, the front two dont. im not sure of the history on the truck because it was given to me, but when i checked the oil it looked like it wasnt changed since 2000 so i changed the oil too! Any advise?
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post #2 of 7 Old 01-13-2010, 05:15 PM
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are the injectors spitting oil out of the spill spouts with the harneses off, or are the injectorts still plugged in? If the injectors are unplugged, and spitting oil, there shot, and you're not building enough pressure in the HPO system to start the truck. sposed to have min 500 PSI to start

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post #3 of 7 Old 01-13-2010, 05:20 PM Thread Starter
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yes the harnesses are plugged up when spitting oil, when uplugged no oil is spit
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post #4 of 7 Old 01-13-2010, 05:27 PM
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so you said the front two on the left bank are not spilling oil with the harneses plugged in right? if the in jectors are not spitting oil, and they are plugged in, they are not working.

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post #5 of 7 Old 01-13-2010, 05:52 PM Thread Starter
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is the injector bad or could the idm not be firing them?
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post #6 of 7 Old 01-13-2010, 06:05 PM
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i guess its possible......

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post #7 of 7 Old 01-14-2010, 03:13 PM
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can you use a test light or meter to see if they are getting a signal?

Vince
John Deere product developement
FOR SALE '99F350 2008 F350 mini maxx'd

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