Black Smoke on acceleration in 4th and gear upwards

[poosnip]

Hello,

It has been a while: my 2.7TDI BPP is getting on...
Recently on acceleration over 30 -40 MPH in a higher gear when the engine has warmed up there is a lot of BLACK SMOKE.

Not sure what it is,

I have replaced air filter....

I will need to investigate injectors because the one on Cylinder 4 there is some oil mist and spray of something on the coolant tank. I can replace injectors but they will be secondhand.


She is drinking more fuel and a little down on power I think.

NO Faults flared up by the car. I have VCDS and I don't really know how to check whether there is a diversion from spec on rail pressures or injector operation etc.


Will the new injector need to be programmed to the car?


Advice would be appreciated

[Gazney101]

Hi, it sounds like you have a boost leak. The ecu is adding fuel for the amount of air flow it should have, if you are losing some of this air you have a rich fuel to air ratio hence black smoke.
Id be looking at boost pipes, intercooler and intake manifold if its a plastic one.

You probably just need the copper washers renewed on the injectors, do them ASAP as the longer you leave it the harder they are to get out.

[poosnip]

It was a boost leak…, lft side lower inter cooler hose


Sent from my iPhone using Tapatalk