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Old 06-24-2012, 09:00 PM
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FICM or Injectors

Hey guys, uncle contacted me about his 6.0 suddenly blowing alot of dark grey to black smoke at all times, even when warmed up. I immediatly thought of either the FICM or Injectors. Im going to talk him through testing the FICM over the phone, but im assuming that even if the FICM comes back bad, it could still be an injector also. So 1 can an injector be bad and not trip a check engine light, and 2, can an injector be bad but not create an abnormal knock or vibration in the engine. It runs and sounds normal, just dumping smoke all of a sudden. Just want a second opinion to see if my theory is correct here.
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Old 07-27-2012, 03:02 PM
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I'm kind of in the same boat, just put on a rebuilt FICM and now it idles rough and dumps black smoke like a dodge! Smokes at idle and through all rpm range? (sorry don't mean to steal your thread).
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Old 07-27-2012, 03:10 PM
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Not throwing any codes except a pending egr issue. Recently pulled and cleaned egr.
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Old 07-27-2012, 05:21 PM
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my '04 with the early 6.0 had one injector get stuck open and smoked so bad you couldnt see the street behind you. didnt throw a code, engine light didnt come on and didnt idle rough. ran a balance test and was able to identify the problem cylinder. I limped the thruck home and didnt drive it till it I could fix it. I had read about burning pistons with too much fuel and didnt want to have to go down that road.
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Old 07-27-2012, 06:10 PM
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So a Ford ids or another good aftermarket scanner is needed, correct?
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Old 07-27-2012, 06:13 PM
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i use the autoenginuity scanner. with the ford "enhancement" I think its 300-400. It has paid for itself 100 times over.
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Old 07-27-2012, 06:22 PM
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If I didn't just spend almost $800 on a new FICM and radiator/install I would. If a FICM is already programmed with the '09 reflash, and the dealer "flashes" it to my truck, could that cause an imbalance issue like you said? They (the dealership) said there was no problem but I'm thinking they messed up and dont wanna admit it.
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Old 07-27-2012, 06:28 PM
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[QUOTE=IowaStroker;3131560]Hey guys, uncle contacted me about his 6.0 suddenly blowing alot of dark grey to black smoke at all times, even when warmed up. I immediatly thought of either the FICM or Injectors. Im going to talk him through testing the FICM over the phone, but im assuming that even if the FICM comes back bad, it could still be an injector also. So 1 can an injector be bad and not trip a check engine light, and 2, can an injector be bad but not create an abnormal knock or vibration in the engine. It runs and sounds normal, just dumping smoke all of a sudden. Just want a second opinion to see if my theory is correct

Yes an injector can be bad and not trip a cel. the codes would be stored. read this.....Write Up: Monitoring the 6.0L PSD.. All 6.0 owners need monitors. This problem could be a cracked injector tip dumping fuel. Not a good scenario. Is it building boost?

Sent from my SCH-I500
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Old 07-27-2012, 10:46 PM
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what's the egr issue you spoke of?
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