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Discussion Starter · #1 ·
The truck in question is a 2004 F250 6.0 Diesel. The issue is that while driving the truck around, everything is okay. But lets say we were to turn off the truck and wait 3 minutes, then start the truck back up; it is insanely smokey. Black smoke everywhere for a few minutes, then it dissipates and everything is back to normal. Any ideas?!?!

Best regards,

Chris
 

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Egr sticking open.

Sent from my phone that somebody didn't help me get.
 

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yup!^ check that for sure
 

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If EGR checks ok you may have one or more injectors sticking allowing too much fuel in the cylinder. If the amount is small enough to still burn it will cause a rich burn condition and black smoke. If it is too much it will get blown into the ehaust manifold and be burned by hot exhaust gases giving a white/grey smoke.
 
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