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'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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  Topic Review (Newest First)
03-22-2019 07:13 PM
Absolute You need gauges. Sounds like the Hydra is giving you fuel, and the turbo isn't responding in time. So possible boost leak. Since it clears in the higher rpm, boost leak seems likely. That said, I get a puff of black with my performance tunes too. Higher the power gain, bigger the cloud. A good tuner can get past that, but it requires live tuning. A generic chip is going to smoke on the launch.
03-19-2019 10:23 PM
jesse7869 no shaft play put the wicked wheel in about 2 months ago and it has been doing it since i got it but i also have a rich diesel smell from the exhaust but i have a hydra chip could that be from the chip? or leaking injectors? or both?
03-19-2019 03:24 PM
klhansen Could be leakage at the turbo seal. Oil could build up in the turbo at idle then get blown out when you take off. Remove the intake hose to the turbo and check the shaft for end play. There shouldn't be any, but if you move it side to side, you may feel just a touch of play. That's not a cause for concern.

Also a buzz test won't find an injector nozzle that's drooling fuel.
03-19-2019 07:24 AM
jesse7869 it happens mostly when i’m sitting at a light and at acceleration but clears up once higher rpms but like i said it’s very very small amount and i can only see it at night when cars headlights shine near my exhaust
03-19-2019 07:19 AM
Whiskyb Mine puffed white smoke on deceleration, turned out to be bad turbo
03-19-2019 06:07 AM
jesse7869 coolant hasn’t gone down down since i owned it it’s just a little puff the only time i can notice it is at night when someone’s headlights shine in my exhaust and yes i believe so original injectors i bought it from the first original owner with 270,000 on it ran an injector buzz test and they all sound pretty much the same but could it be a leaking injector? or could it be low fuel pressure?
03-18-2019 09:42 PM
ArcticDriver A few more details might help get you some responses.

280K is high for original injectors, have they been replaced?

Are you sure its random?
Not when you accelerate?
Not when it changes gears?
Auto Trans?
It does not happen when cold?
Do you have a tuner or stock?
Any SES (Check Engine Light) illuminated on dash?



White probably means unburned fuel.

Is your coolant level stable in your degas reservoir?
03-18-2019 08:47 PM
jesse7869
7.3 white smoke

2000 f-250 7.3 white smoke from exhaust at random times as the truck gets hotter over time of driving it the injectors get louder 280,000mi no blow by just a little white vapor any help would be appreciated

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