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  #1  
Old 01-02-2010, 06:40 PM
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Join Date: Oct 2005
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350 sdl

Has anyone ever heard of a 603 sucking oil in through the turbo from the crankcase. If so how much damage could it do. It has not been run out of oil and it will still crank.


Thanks, John
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  #2  
Old 01-02-2010, 07:02 PM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 33,980
If the oil seal protecting the oil supply to the turbo bearing fails, oil under engine pressure will pump into the void which in turn will go into the engine intake. It will drain the crankcase in a hurry so if not noticed early enough can cause fatal bearing damage.

You can get an idea of what you have by refilling the crankcase and firing it up. If the bearings have been starved for oil you may have hammering from them or low pressure if they have been wallowed out from lack of oil. If you get quiet running and good oil pressure you may be able to fix the seals and be good to go.

Good luck!
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Last edited by t walgamuth; 01-02-2010 at 07:08 PM.
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Old 01-02-2010, 07:04 PM
compu_85's Avatar
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Sounds like the turbo blew and the engine ran away. Don't try to start it until you resolve the oil leak into the intake (removing the crossover pipe is enough for a test). I'd do a compression test. A 350 doesn't need any help bending rods, and sucking in lots of oil might push it over the edge..

-Jason
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1991 350SDL. 230,000 miles (new motor @ 150,000).

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2012 Passat TDI. 95,000 miles. More space, power, and fuel economy than the Benz
2004 Touareg V10 TDI. 150,000 miles. One of 450.
1999 Jetta TDI. 310,000 miles.
1992 Jetta ECOdiesel. 156,000 miles. 1 of 48. Sold.
1991 Jetta ECOdiesel. 430,000 miles. 1 of 700. Sold to VeeDubTDI, totaled in front of our house
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  #4  
Old 01-03-2010, 10:29 AM
t walgamuth's Avatar
dieselarchitect
 
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Location: Lafayette Indiana
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What evidence is there of it running away from his post?
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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