Cold misfire cyl #1 [with compression readings]

[k_pt]

Greets

I've been having some trouble with my tdi pd150.
On cold starts I get misfires for the first 5 seconds, with white smoke, and injector #1 reading starting at 2.99, and slowly droping, 10 secs after the engine is fine, the other injectors are ok, just negative compensating the first injector,

When warm I get all the injectores between -0.12 and 0.12, due to new camshaft and lifters. While warm is perfect. Pulls ok, mpg is ok.

Oil level doesnt move. Although I have some oil in the intake, already installed a oil catch for that and a new turbo is ready to install.

Have clear lines at the fuel filter, no oil on fuel.

I have a video with inj values but I can't share it. I'll give you the numbers since the engine is turned on, after sitting for +8 hours at 17°C, the values appear every second since startup, from 1 to 4 cyl has vcds shows:
2.99 -1.41 -1.15 -0.59
2.99 -1.29 -1.29 -0.52
2.99 -1.27 -1.36 -0.47
2.96 -1.18 -1.41 -0.40
2.80 -1.08 -1.46 -0.21
2.61 -1.04 -1.48 -0.07
2.40 -0.94 -1.44 0.00
2.16 -0.87 -1.36 0.02
1.93 -0.80 -1.29 0.09


And after some minutes:
-0.02 -0.12 0.00 0.12



On a compression test, cold readings, I get:

cyl1 28.5bar
cyl2 33bar
cyl3 30bar
cyl4 32bar
cyl1 27bar

Hot:

cyl1 29bar
cyl2 33bar
cyl3 31bar
cyl4 32bar
cyl1 30bar

Is it the gap between #1 and the rest thats causing my problem? Or it's not enough to cause my problem?

Could be an injector problem or seal?

Do I take the trouble to swap injector #1 and #2, also have a spare loom I could swap, or do I just take the head off?

Edited by k_pt on Saturday 11th August 20:30