cylinder contribution - help. injectors??

[beclawrence001]

Hello,

I have a ford transit, 2011. 4 cylinder manual, 150k km.
This issue is driving me nuts and no mechanic is really taking it seriously.
So, for some history I believe I got some bad diesel in January or something electrical was damaged by water, as I was in a huge storm in my van at the beach. The day after that storm the car started to hunt at idle, in general was louder but still drove good and has no power loss or smoke.
Back in January when it started I put in a diesel bug killer and that made the hunting go down a lot but it came back and eventually a mechanic listened and changed the scv. BUT after the scv and the fuel filter was changed the car now idles a lot worse, it is a lot louder, vibrated and has a slight shake you can see in the engine. Another weird symptom after the scv change is the car takes like 3 times longer to warm up.
The vibration/idle shake is worse when it is hot.
It also has a glow plug circuit code and a GB module code. But it had those before the scv was changed, so I suspect something fuel related, but maybe it is electrical?
I had the fuel pressure checked at idle was normal
Does not hunt or sputter or loose power.
Today a new mechanic checked the live data on his scanner and the cylinder contribution was all over the place. One was -600 and one was +500 something, the other two were between 200-300.
This was at idle when the engine was at operating temp.
So I am wondering if anyone has any ideas about what this could be. Could it be electrical or fuel related?
What should I get tested
I am wondering if it is the ecu messing up the fuel delivery? Bad wiring or something?

I would love some opinions
Thanks
Bec
beclawrence007
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Joined: Mon Apr 24, 2023 11:17 pm