injector problem, sputtering - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 04-17-2012, 04:54 PM Thread Starter
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injector problem, sputtering

My truck has this wierd issue ever since I've bought it

happens cold or at operating temperature

If I hammer on the throttle and go WOT sometimes the truck will downshift like it should but it will go up to about 2500 rpm then hit a brick wall wont accelerate at all and sputter horrible, it pours out blueish gray smoke when this happens so I let off the throttle and it stops then get back into it gradually and everythings fine

its really starting to piss me off.

I'm thinking its a injector, I've cleaned the egr valve twice since I've bought it


this is copied from fte i couldnt find a response

can anyone on here give me a hand


2003 (build date 06/2003) f250, 6.0 stroke, automatic, 4x4, 3.73 GR, bought with 96k miles, ficm resolder, ccv mod, coolant filter, powersteering filter, straight pipe
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post #2 of 4 Old 04-17-2012, 05:08 PM
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Sounds to me like a boost leak. When you back out of it and roll on slower boost levels climb slower thus requiring less fuel. When you hammer it vgt duty cycle goes through the roof thus needing more fuel but without air you get bluish grey smoke! Id start by looking for a boost leak, probably one of the cac couplers.

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post #3 of 4 Old 04-17-2012, 07:14 PM
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Depending on mileage I would go with an injector(s). I just did injectors but my truck has 240k ok it so it was about time. Could also be stiction as I had that problem also. Rev x can help but won't entirely fix it. But I see in your sig that you have 96k so I wouldn't think it could be injectors. Maybe get em buzz tested and see what comes up.

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post #4 of 4 Old 04-17-2012, 07:39 PM Thread Starter
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Im going to pull all my cac boots and check them, especially the hot side ones

Truck now has 104k miles, all injectors original

Running mobil 1 5w-40 full syn turbo diesel oil with a dose of archoil 9100 I also have no stiction issues

I hooked up AE to my truck but it was after a 15 mile drive so everything was warm during diagnostics, I had some low boost code, but nothing else all injectors passed buzz test and contribution test, ficm is working 100%

Im not sure about fuel pressure but I do know I do not have the blue spring upgrade

Turbo was reconditioned 10k miles ago and up pipes are new also

I do not remember the low boost code but I know that's what popped up

Now that I wrote all this, im starting to lean away from injectors as being the problem


2003 (build date 06/2003) f250, 6.0 stroke, automatic, 4x4, 3.73 GR, bought with 96k miles, ficm resolder, ccv mod, coolant filter, powersteering filter, straight pipe
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