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Discussion Starter · #1 ·
So I put new injectors in, truck ran great seemed to spool easy. My old injectors were absolutely shot.

So if I hard accelerate it'll push black then go white, I'll let off and cruise at 55 and lug it back up to 60 it'll spool and sounds weird. Like its cutting out, and pushing white smoke. I hear the noise from inside the truck sounds like from the air intake. Give like 30 seconds and lug it to 60 from 55 just pushes black and sounds normal. Only happens after a hard push. Is the turbo going out?
 

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Discussion Starter · #2 ·
It's more of a shuttering sound rather than cutting. But when it shutters like that it blows white smoke, no power loss
 

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How many miles on the new injectors and what size did you buy? Some times it takes some miles to get the air out or the heads. Do you have a way to monitor boost and oil pressures etc?
 

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Discussion Starter · #4 ·
Idk why but I can't reply other than using this.

But injectors have about 100 miles on them. They are the swamps stage 2 double shot. 30hp injectors. Just a little bigger than stock.

If it was still air the turbo would sputter while accerating though
 

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They are split shots that have larger nozzles? Did you ask if you need special tuning to run them ?

How did you clear the cylinders after installing the injectors?
 

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Discussion Starter · #6 ·
No special tune needed, harmonic balancer, then started right now blew smoke which is normal for like 15 minutes.
 

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Discussion Starter · #8 ·
Yes sir, they said something about a bleeder in there but I didn't mess with that. Just Gp out turn by hand. I have drove 230 miles about. Didn't stomp on it till about 190 200 mile range, and holy hell it's so alive now.

The turbo sputters after hard acceration and white smoke while accerating.

If no hard acceration before hand it is just fine, blows black no white. It's strange wonder if it's a seal? Maybe hopefully.
 

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No idea what somebody was referring to with the bleeder deal.

What is turbo sputter?

White smoke once warmed up in a 7.3 is going to be poor final injection pressure or not enough base heat due a worn out engine. This is why I suggested compression tests.

If you think you have a turbo issue, inspect it.


Black and white alternating can be a slipping hpop drive gear.
 

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Discussion Starter · #10 ·
Idk how to really discribe it, it's like the whistle of the turbo is cutting in and out rapidly. Could there be a chance of it just being blow by for some reason hitting the blade? It does only do it at a heavy acceration. Things heat up and maybe some how hits the blades, no power loss.

I replied back I wasn't able to get a compression test done because I got called into work. Thought I had two days only got one off.

I never shown signs of compression loss though.
Btw, its a good thing I changed those injector, I never realized how bad they were. When it cold starts it sounds like those did at fully heated eot. Not rough at all!
 

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Discussion Starter · #11 ·
Wait if the hpop drive gear is slipping, would that cause oil to hit the turbo? Because if so, a lot of things just made a lot of sense.
 

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Just putting a idea but what turbo do you have?

If its stock turbo stock wheel it might not be big enough for those injector

I don't see signature on my phone so sorry if the info was there


Sent from AutoGuide.com Free App
 

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No a slipping drive gear is not going to put oil in the turbo syeste.
Oil is in there because the intake drafts the crankcase fumes.
The drive gear drives the hydraulic pump that has hoses that feed hydraulic pressure to run the injectors, like I wrote earlier.
Have you read Swamps page on hydraulics or the coffee table book yet?
 

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Discussion Starter · #15 ·
It's just the stock turbo with out the ww.

Idk how to explain the sound it make to make sense. It just sounds like it sputters after I try to build boost after a heavy acceration. And no I haven't had a chance to read it I'm back at location with limit service
 

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Discussion Starter · #16 ·
No a slipping drive gear is not going to put oil in the turbo syeste.
Oil is in there because the intake drafts the crankcase fumes.
The drive gear drives the hydraulic pump that has hoses that feed hydraulic pressure to run the injectors, like I wrote earlier.
Have you read Swamps page on hydraulics or the coffee table book yet?

Can you link me both of those so maybe I can find enough service to load the page
 

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Discussion Starter · #18 ·
I have Google haven't came up with anything I don't have good strength to search though. I'm just hoping it's just burning off the rest of the oil from the injector being changed and it's just getting blow by to the compressor wheel making that sound and causing that smoke.

Won't have my tool till I get home to check the compressor wheel. Hopefully it's nothing major
 

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Sounds likes either turbo surge or your turbo bearings are shot and one of the wheels is scraping their housings.

Check out turbo surge on YouTube.

It takes 100 miles of hard driving to get all the air out of the system.

Black smoke is from a few different things.

Modded split shot injectors are smokey pigs

But in your case the black/grey smoke is probably from not enough air.

The cheapest way to fix surge and increase air flow is a billet compressor wheel.
 
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