new injectors failed ? - Ford Powerstroke Diesel Forum
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Old 08-11-2012, 06:17 PM
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new injectors failed ?

hi, Im new to this forum so hi to everybody... but here is my problem, just bought a 04 f350 w/ a 6.0 that starts a little hard when cold but doesn't have any power till it warms up .took it to a dealer to diagnos (?) it .. he told me the 1,2,5 injectors were bad or going bad so I changed all 3 . First 1 and 5, then I started it up let it run for a little . then changed 2 injector .. put everything together and tryed to start it and after a long while it did start but ran terrible took it for a ride (missing badly) about 5miles no help
any ideas, sure could use some help!!
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Old 08-11-2012, 07:48 PM
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What is your FICM voltage? Do you know what your fuel pressure is?
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Old 08-11-2012, 07:51 PM
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Start with the causes of Injector failure, FICM voltage and Fuel Pressure?

You may have just killed new injectors, or something wasn't reinstalled correctly.

Why did you do 2 injectors, then the third?
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Old 08-12-2012, 08:07 AM
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checked ficm voltage and its good 49.2 w/key on and 51 turning over 89 or 90 w/key off ..... does that sound right? fuel pressure - no way to check
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Old 08-12-2012, 08:10 AM
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the two were on one side so I changed those first, started it up to see if it made a difference and I think it started better
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Old 08-12-2012, 12:51 PM
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For the FICM: Something is not right with those numbers, what are you getting those from?

You need to get a fuel pressure gauge/reading, it should be between 45-75psi.
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Old 08-12-2012, 02:01 PM
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as it turns out the wire harness wasnt plugged all the way only 4 cylinders were firing. pushed it in and truck runs great...real glad I didnt kill the injectors thanks for you help
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