Fuel quantity correction high and 1 and 2

[Pazman]

A4 2.0 TDI 2008 57 plate bpw engine 116k

Misfire at 1600rpm and 2200 rpm in neutral
Not very noticeable when I’m gear driving .
Rough idle intermittently.

Delphi shows

At idle

Fuel quantity correct

1. 2.99 mg/H
2. 2.28mg/H
3. - 2.96mg/H
4. -2-45mg/H

I need to test this when driving and at different rpm tonight but it doesn’t look good at cylinders 1 and 2 .

Any ideas what to try to rectify this before spending money on injectors ?

 

[Pazman]

A4 2.0 TDI 2008 57 plate 116k full service BPW engine
Occasionally rough idle when cold
Sight misfire at 1600rpm and 2000-2200rpm
No judder felt under load just a bit flat at low rpm
Low mpg 26-30 Around town , 39 on long run at 60 mph .
Dpf regen light on after 700 miles and needs a run down the motorway for 20 mins to clear .
No smoking , no starting problems, no water or oil loss , no oil water mixing .

Plugged in Delphi and I see fuel quantity corrections of

1. 2.99MG/H
2. 2.88 MG/H
3. - 2.85MH/H
4. -2.90 MH/H

I understand the ecu is compensating to smooth out what the problems but what is the problem
Is 3 and 4 low because those injectors are restricted by carbon maybe or does 1 and 2 need more fuel because of what ?
How can test to find why 1 and 2 need more fuel
Or is the problem 3 and 4 ?
Porous head between 1 and 2 , duff injectors?

Any idea guys where I should start ?
I’ve orders some liqui moly to do a diesel purge this week and see if that changes any readings
I’ll order some stretch bolts and injector seals this week too and intend to swap 1 for 4 and see if the problem stays with the injectors.

 

[jonohendo70]

Mine started doing the same at 5he weekend. Readi gs the same . It's a cvt so at low revs it shakes the car to bits when trying to accelerate. Did you find the issue