oil leak from 300 tdi - Defender Source
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  #1  
Old April 7th, 2011, 10:38 PM
muhley
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matt
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oil leak from 300 tdi

I seem to be leaking oil from between the engine and trans. First thought is rear main. Could it be something easier? Tried a search for 300 tdi rear crankshaft oil seal but couldn't find any thing. Any thoughts or other threads would be appreciated.
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Matt
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  #2  
Old April 7th, 2011, 10:45 PM
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mark kellgren
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rule in or out a head gasket or valve cover leak from the back of the block that could be dripping down the block around the bellhousing to the bottom.
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Old April 7th, 2011, 10:54 PM
muhley
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I'll get a light and mirror for that right now. looked dry from what I could see but I'll double check.

------ Follow up post added April 7th, 2011 10:00 PM ------

valve cover to head is dry, head to block is bone dry. can't think of anything but the rear main.
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  #4  
Old April 8th, 2011, 06:03 AM
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Tony Sims
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Could be the input shaft seal on the transmission. Not really better.
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  #5  
Old April 8th, 2011, 07:15 AM
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oil soaked filter
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Rear main is very common leak, especially it seems at this point in many 300tdi's lives. I have 2 in the shop right now for the same thing. No easy way out. Seal is LUF100430 and the updated gasket ERR6811.....I think, but I'd check that. Fortunately the motor is a pretty easy in - out. Look at the clutch while you are in there and replace the clutch fork.

Also for oil leaks check the intake manifold (not really an oil *leak* but will make a mess). Check the fuel lift pump and the oil pump. both prone to leakage were they mount to block. The oil leaked often gets blown to the back of the block.
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  #6  
Old April 8th, 2011, 10:40 AM
muhley
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matt
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Thanks for the input guys. As long as the fluid level is checked frequently can I drive it for a month or so, or is there a chance that it could empty the crankcase all of a sudden? It leaves a stain about 3" in diameter right now (after being parked for a while). Again thanks for the help.

------ Follow up post added April 8th, 2011 10:10 AM ------

after closer inspection it looks like(got fingers crossed) it could bu coming from the engine breather filter. the manual has a section an cleaning it. If it is dirty would it push oil out or is it faulty? have you tdi guys dealt with this before?

------ Follow up post added April 8th, 2011 10:12 AM ------

is there anyone who sells the O ring needed to reinstall breather located in San Diego?
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  #7  
Old April 12th, 2011, 10:14 PM
muhley
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engine breather filter was broken where the bottom hose connects. ordered a new one through brit. pacific. could not figure out which hoses to get though. mine are cracked all the way around on the upper and lower hose to the breather. any guess on part #'s
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Old April 12th, 2011, 10:32 PM
Naplm00
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i just used some heater hose on mine
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  #9  
Old April 13th, 2011, 12:34 PM
muhley
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matt
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Originally Posted by Naplm00 View Post
i just used some heater hose on mine
I think I'll do the same.
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  #10  
Old April 13th, 2011, 12:39 PM
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Tony Sims
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You can get oil resistant hose from many auto parts stores. It will last better than heater hose and costs about the same.
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[appropriated from Ren Ching] Most faults can usually be traced to the badge on the grill.
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Originally Posted by chris snell
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