W211 OM642 Smoking and losing oil

[Stian OM642]

Hey. I got a W211 OM642 engine. I changed turbo once because it was dragging oil into exhaust, brand new turbo. After change i have to fill oil every 5-6 days. I have changed the crank ventilation, and this cover behind, and still no changes. It Smokes much. Looks like i create a fog behind me when i drive and covers cars behind, white/grey smoke. EGR is removed, and DPF and cats are also removed. And i cannot find the problem. Can it be internal in the engine? Or can turbo be bad already? Changed it 1 month ago..

 

[Steve@Avantgarde]

You probably have some worn injectors. The nozzles are dribbling. If its a grey smoke then its excess fuel being burnt.

 

[hmang]

Careful if you are getting excess fuel in the cylinders .
if it's not all burning ,it could get past your piston rings and dilute your oil

 

[ajlsl600]

Doubt that op saying he always topping up oil level. If no turbo issues .guides,rings .start with compression test . Then hold rpm at smoking point,inplug/ back off injectirs 1 by 1 see if that locates issue.

 

[Steve@Avantgarde]

I missed that bit about topping the engine oil up

 

[Doug1234]

Doubt that op saying he always topping up oil level. If no turbo issues .guides,rings .start with compression test . Then hold rpm at smoking point,inplug/ back off injectirs 1 by 1 see if that locates issue.

Injectors and ecu can be damaged by unplugging when engine is running.

 

[ajlsl600]

Moat decent diagnostic kit allows for dropping injection off 1by1
If its common rail a work around could be a blanking plug on one outlet at a time ,no ?

 

[star]

Don’t dismiss a new turbo being faulty, remove exit pipe to check.

 

[Stian OM642]

I took of pipe behind turbo, and the propeller was clean but much oil in pipe, almost like glue texture. I am guessing piston rings, im doing comp test as soon as i can

 

[hmang]

Injectors and ecu can be damaged by unplugging when engine is running.

Star will let you switch injectors off . You'd hope that would be ok

 

[star]

I took of pipe behind turbo, and the propeller was clean but much oil in pipe, almost like glue texture. I am guessing piston rings, im doing comp test as soon as i can

Did you check exhaust manifold pipes to see if clear of oil? If rings, there would be a lot of crankcase pressure.

 

[Stian OM642]

Did you check exhaust manifold pipes to see if clear of oil? If rings, there would be a lot of crankcase pressure.

I would not say that its much pressure in the crank case, not that i know of. But no there was no oil in the manifolds as i could see, only exhaust behind turbo

 

[star]

I would not say that its much pressure in the crank case, not that i know of. But no there was no oil in the manifolds as i could see, only exhaust behind turbo

Then I would suspect turbo.