injector 2 only disturbed engine not 1,3,4? - Ford Powerstroke Diesel Forum
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Old 01-28-2014, 09:56 AM
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injector 2 only disturbed engine not 1,3,4?

Hello
My truck showed water as I was driving it, half hour later I heard a pop and low power.
Loads of black smoke now.
AutoEnginuity showed 1&3 injector
Cleared codes after putting rev-x in oil and injector clean in fuel.
Changed fuel filters.
And yes about 2000 km 1600mi ago, changed oil so not so recent.
Now only injector 3.

Because #2 changes the idle of the truck but only by a few rps I am wondering if i should (A) change 1234 injectors
or
(B) look at the oil delivery pipes.
I have new injectors and seals showing up today but would like a few bits of info regarding oil delivery to the injectors.
5678 contribute mildly to rpms but there is little effect from shutting any of them down.

any/all comments appreciated
kind regards
james
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Old 01-28-2014, 01:14 PM
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James, Assuming you are working on a 6.0L and depending on mileage and a few other variables, you may just have one injector with damage. PCM will seek to correct engine idle using the remaining cylinders and fueling to keep contribution as balanced as possible. That's why, with the proper scan equipment, you can run and enhanced power balance test, where PCM is prohibited from correcting cylinder balance. Verify proper fuel pressure and condition, change filters and drain WIF as needed. Perform an enhanced cylinder balance test if possible. If you have zero scanning equipment, you can use a temp gun or even a squirt gun. If you have a temp gun, check the exhaust temp at each exhaust port. The temp will be a little higher the further back you go, but should be close. If you go real low tech, use a squirt gun. Count how long it takes for the water to burn off as you squirt each exhaust port where the manifold meets the head. A dead hole will be obvious.
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Old 01-28-2014, 04:57 PM
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1357 are roughly 150-180
2468 are 300-330
I am suspecting loose connections
Or could the similar temps be from PCM correction?
Will wiggle wires soon, injectors showed up! Also O rings if I find that is it.
The overall fuel press was 5800 @ idle, 9000 @ 1200 roughly.
Kind regards
James
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Old 01-29-2014, 06:35 AM
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Ok, it sounds like you are working on a 6.4L, from your fuel pressure readings, which has very different diag. Your temps show either low contribution on bank one, or overfueling on bank two. 6.4 is really good at masking major problems with fuel correction. I would find someone with an IDS and do Relative Compression, Power Balance, and Enhanced Power Balance. Check your oil level. If its up over full significantly, drain it down to an acceptable level before performing ANY further tests. This engine, once oil level creeps up high enough due to fuel in the oil, which happens normally as a result of the regen process, will push the oil/fuel mix into the Charge Air Cooler, where it can be injested into the engine, and used as an unmetered fuel source. Due to intake manifold design, the lions share of this mix ends up in cylinders 2 and 8, possibly damaging the engine as a result of overfueling.
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Old 01-29-2014, 08:11 AM
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dang
sorry
it is a 6.0l
I suspect as I still have injector codes I will change #3
I suspect I will change 1 5 7 while there.
hate to fix what is not broke butů

thanks
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Old 01-29-2014, 01:43 PM
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If you have a 6.0L, your fuel pressure should be a constant 45 psi, and ICP should be somewhere around 600, with 23% duty cycle at idle. Your fuel pressure numbers look like a high pressure common rail engine, not a HEUI engine.
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Old 01-29-2014, 06:28 PM
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right
should check those fuel pres, maybe there is a . decimal and I am reading 50.00 to 90.00
my laptop running ae is on the fritz and the injectors are our anyway
new ones tonight
let ya know
kind regards
james
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Old 01-29-2014, 06:29 PM
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out
not our anyway
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