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Rebuilt 5.9 excessive black smoke

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Old 04-08-2019, 10:56 PM
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Rebuilt 5.9 excessive black smoke

Rebuilt due to dropped valve. Anyways, I had motor rebuilt and injectors rebuild etc. problem I am having is (smarty jr) back to stock. With the lightest touch of throttle is rolling smoke. Cruising speed you still see black haze. Truck seems to run ok!

truck is 04.5 is it possible engine shop used 03-04 style pistons/or injectors place gave me bigger injectors?

i am going to do a boost leak test tomorrow, I also changed air filter checked rail pressure etc everything seems good. Turbo spools etc, I do not have any gauges to check true boost numbers

what’s your guys thoughts?
Old 04-09-2019, 02:17 AM
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Originally Posted by Bg1490
Rebuilt due to dropped valve. Anyways, I had motor rebuilt and injectors rebuild etc. problem I am having is (smarty jr) back to stock. With the lightest touch of throttle is rolling smoke. Cruising speed you still see black haze. Truck seems to run ok!

truck is 04.5 is it possible engine shop used 03-04 style pistons/or injectors place gave me bigger injectors?

i am going to do a boost leak test tomorrow, I also changed air filter checked rail pressure etc everything seems good. Turbo spools etc, I do not have any gauges to check true boost numbers
what’s your guys thoughts?
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Hi.
It appears that injectors are giving too much fuel, hence the black smoke.
Did they rebuilt your injector, or gave them yours and the gave another ones (rebuilt) in return?
Any codes, check engine light on?
Old 04-09-2019, 03:40 PM
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I checked for boost leaks All good! Injectors were mine that they rebuilt they said.. wondering if they put 03-04 style pistons in with my 04.5+ injectors
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