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Injector fail

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Old May 28, 2014 | 07:10 AM
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Injector fail

Drove truck it ran fine shut it off. Went to start it half hour later it turned over but no fire. Flat bedded to garage everything tested fine except injectors bought new injectors installed started truck right up. Only thing anybody found was a bad spot in a wire from alternator could that ruin injectors without hurting ficm?? I am concerned about wasting new injectors. Any info is appreciated.
 
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Old May 28, 2014 | 07:22 AM
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Sounds like you had an injector short out,probably could have isolated and only changed out 1 but it never hurts to replace the set.
 
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Old May 28, 2014 | 08:06 AM
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All the injectors tested bad with the buzz test
 
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Old May 28, 2014 | 08:13 AM
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I've had 1 injector shorted to ground and throw everything out of whack. Also check the injector harness make sure the connectors going to the FICM are tight and all the locking tabs are there.
 
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Old May 28, 2014 | 08:38 AM
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Have checked all wiring but will do again it can't hurt. I just don't get why all injectors would go and everything else tests good
 
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Old May 28, 2014 | 08:52 AM
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Originally Posted by Harry Ziegler
Have checked all wiring but will do again it can't hurt. I just don't get why all injectors would go and everything else tests good
It would help if you could post any codes that led you to believe the injectors were at fault, I have a very hard time believing all the injectors died at the same time.
 
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Old May 28, 2014 | 10:03 AM
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Everybody says the same thing they failed the buzz test so tested a couple used ones and they worked I do not have the code or codes that came up as I have a couple of x ford mechanics who have their own shop work on it. Obviously something made them go just can't figure what I would like to figure it out so it doesn't get me again I will ask them for the codes. Everything else tested ok Just found bad spot in alt wire. Maybe a spike in voltage from that?? Can't find any info on all eight quitting at once. Thanks for any help
 
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Old May 28, 2014 | 10:55 AM
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Originally Posted by Harry Ziegler
Everybody says the same thing they failed the buzz test so tested a couple used ones and they worked I do not have the code or codes that came up as I have a couple of x ford mechanics who have their own shop work on it. Obviously something made them go just can't figure what I would like to figure it out so it doesn't get me again I will ask them for the codes. Everything else tested ok Just found bad spot in alt wire. Maybe a spike in voltage from that?? Can't find any info on all eight quitting at once. Thanks for any help
Most cases I have read about where all 8 injectors came up with codes ended up being the FICM.
 
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Old May 28, 2014 | 03:40 PM
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The ficm tests good can it do that to the injectors and then test ok??
 
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Old May 28, 2014 | 06:01 PM
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A lot of times, if all 8 injector codes come up, they are accompanied by a P0611 FICM code.

See if those shop guys have the list of codes that came up.
 
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