Idle stabilisation injector timing

[L333fow]

Hi guys I've got the rough idle problem, I've searched on here and followed various how to's like the cambelt timings and tick over but still seem to have the rough idle!
before I decide its the dmf I'm trying to check the injectors!
Could anyone tell me if these readings are out?
cylinder 1 -0.35 Cylinder 2 -0.40 Cylinder 3 0.38 Cylinder 4 0.40
that's with warm engine
Car is 2.0tdi 2007 42000

cheers in advance

 

[NHN]

Intake manifold flap ok?

Injector readings afaik are within tolerance.

 

[L333fow]

I thought the tolerances were within 0.5+/-?
intake flap?

 

[NHN]

& your tolerances are within 0.5 according to your data.

Intake manifold flap that the air intake goes through, it opens & closes, sometimes, engine/year dependent, the teeth inside these break & the unit doesn't work properly, could be a restriction in air flow, speculative as diagnosing over the net, but something to check.

 

[L333fow]

Yeh sorry my fault didn't read it properly!
Is it easy to access and check? Not the best with diesels and this engine done most my work on petrols and Leon Cupra r.
was going to look see if injectors seals looked ok but weren't obvious without cracking tools out and we were going out tonight ha