After replacing the turbo with a used one, and doing the GSXR actuator change out, I took her for a 10 mile run on the highway.

Car ran great, drove well, but one issue...big time mosquito fogging. White smoke in big clouds the whole time.

Smoke smelled like diesel and engine oil. Got home and noticed the rear bumper and trunk lid has engine oil spray on it.

The turbo I installed had no perceivable play, and it still does not. However, I am thinking it needs new seals.

What is the ideas you guys have?

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

on OM602 sometimes the oil from the front oil passage (pressurized) makes it's way to the #1 cylinder because of a leaking head gasket. Especially when hot and under pressure.

There are other possibilities as well but that's just one of them

Time for another turbo.

Any smoke with the old turbo? If there wasn't any then it is probably the new turbo is leaking/burning engine oil.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

Hmmm...there is no oil and water mixing, and I do have an injector nailing. Hope it is not a head gasket. Original owner passed away two years ago, and the car sat. He also used non diesel oil in it, but had it changed every 3k miles, but the soot still grinded the turbo bearings.

Can the head gasket leak enough oil to have unburned oil make a puddle or oil at the tail pipe? I have read that bad turbo seals can.

Thanks!

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

The car was missing its turbo when I bought it. The old one was not rebuildable. The casing got chewed up, according to the PO's son.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

or engine oil entering the combustion chamber and pre-igniting.

but yes it could be a turbo or pcv problem.

diagnosing it will not be easy.

to check for head gasket: #1 cylinder at tdc on compression stroke, remove the oil filter, put air into cylinder and then watch/listen

to check for turbo: look for play and if you have a spare put it on and see what happens. Maybe someone on here has a better idea on how to test it.

My experience is if the car smokes like crazy then it is likely the turbo. If water leaks into engine then the expansion tank will have milk shake like liquid.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

You don't need oil and water mixing to have a bad head gasket, on OM602 that oil channel is very close to the #1 cylinder

There is no oil and water mixing. The oil cap does not bounce like a tea kettle lid. And it runs like a scalded dog. I was really surprised with the pep it has.

Turbo spins easily by hand, with no perceivable forward/backward or lateral play. I will pull the turbo and see where oil wetness is coming from. Dry exhaust manifold and wet exhaust pipe points to turbo seals, IIRC.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

I would think with that much smoke "mosquito fogging" there would be a noticeably wet turbo output side also. Looks like soon you will be pretty good at R+Ring that model turbo.

What about the transmission modulator leaking? Sucks trans fluid into the intake. Check the vac line for fluid

__________________
1993 e300
1995 e320
1994 e320
2006 s500 4matic
2004 Jeep wj overland
2001 Ducati 748
2004 Honda shadow aero

Vacuum lines are clear and dry.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Are you 100 percent the smoke is coming out the tailpipe?

__________________
1993 e300
1995 e320
1994 e320
2006 s500 4matic
2004 Jeep wj overland
2001 Ducati 748
2004 Honda shadow aero

Yes. In fact, when I nailed it, smoke bomb effect. Also, after parking, a puddle of oil was noted about 10 min after engine shut off. Tail pipe very wet with oil, and black oil spots on the rear bumper and trunk lid.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

can you post up the part number and where you sourced the actuator?