Ford 6.0 smoke after letting off gas

[fordpowerstroke2]

2005 ford 6.0, I just put a new #3 injector in but then when I let off the throttle it starts to smoke. When it first started happening it was white now it is black/grey. It starts chugging and has no power so I have to put it in neutral and rev it up. It mainly does it at intersections. And the cold start and somtimes even warm start I have to crank it for 15 sec. The motor at first is really quite and then ford up to 1000rpm then bogs down to 500rpm and almost dies then goes back to normal. And idles fine. I think it is something with the hpop or injectors sticking. The smoke also smells like unburnt fuel.

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[ghohouston]

How many miles have you put on it since the injector replacement?

 

[fordpowerstroke2]

Around 250 miles I will check later though.

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[78f100]

Check ficm voltage.

 

[6.0 Tech]

Check egr voltage koeo, it may be sticking own some

 

[fordpowerstroke2]

Ok I will do that

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