Injector flow correction - what's normal?

[fattail95]

Hi guys,

Hooked the car up to planet today as I noticed it had been a little more sooty (black smoke) than usual when driving it hard. Looking at the flow corrections, the injectors were between 0.2mm³ and 1.5mm³ out at idle, and between 0.5mm³ and 3.5mm³ under full load! My understandings of these values are as followed:

0mm³ → 1mm³ = normal injector function
1mm³ → 2mm³ = lightly dirty injectors
2mm³ → 3mm³ = dirty injectors
3mm³ → 4mm³+ = very dirty injectors, potentially a failing injector.

Are my assumptions right, and are my injectors (one was 3.5mm³ at worst) in nead of stripping and ultrasonic cleaning? I thought I'd create a thread about this as I couldn't find a clear list of what the values meant...

Many thanks,

Benjamin

[GingerMagic]

I too await an answer from someone more competent than me, as my injectors are
1st - 3.1, all the others are within the 0.5 and 1.5.....

My older 2.2Hdi was a bit random but I did use Millers on it for about 6 months and it seemed to sort it out - I will try this on my current car before concluding if my injector is fubared or not.....

[rwb]

They're normally all over the place at idle, but should snap into line when you rev it.

Could soot be remap related?

[fattail95]

They're normally all over the place at idle, but should snap into line when you rev it.

Could soot be remap related?

Perhaps? It's only when your coming onto boost, once it's at full boost it clears up.

[fattail95]

Does no one have an idea about flow corrections?