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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Oil and carbon in throttle body



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      02-06-2013, 11:36 PM   #1
elester12
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Oil and carbon in throttle body

Does anyone know if its normal to have lots of carbon and oil in the throttle body? I was cleaning mine out and noticed a lot of carbon and oil.
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      02-07-2013, 08:18 AM   #2
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not nice
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      02-07-2013, 08:36 AM   #3
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Can you take some more pics?
Details about yout car: Miles, EGR recall, etc.?

Thanks,
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      02-07-2013, 08:44 AM   #4
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Need OCC lol
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      02-07-2013, 11:35 AM   #5
elester12
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My car has about 50K on it. It's had the head replaced a few times and the EGR was done awhile back.

Now if I understand correctly diesel engines do not have a throttle body. My guess: This is a unit to stop a runaway engine.

Never heard of a runaway engine? Check this out.

http://www.myturbodiesel.com/1000q/s...ine-how-to.htm


I'm sure there's lots of oil in the intercooler.
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      02-07-2013, 01:32 PM   #6
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This could be normal build up for diesel engines...I don't see any "carbon" deposits in the picture. Carbon build up is pretty much dry, hard stuff.
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      02-07-2013, 05:30 PM   #7
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oh its in there. The camera just can't get a good view
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      02-08-2013, 06:01 AM   #8
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amigo you have a problem use any DIESEL additive injector cleaner and cetane booster and run your car like a pimp rides his two cent whore and the car hopefully will get rid of it, or otherwise go to the STEALERSHIP so they can rip you a new ahole, sorry i had to be this crude but its a fact!!
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      02-08-2013, 07:52 AM   #9
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Looks normal and I don't believe its hurting anything. Forced induction is dirty business.
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      02-08-2013, 10:11 AM   #10
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thanks- i've started using opti-lube recently.
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