Engine oil leak

Nickster2304 · 02-20-2021, 08:26 PM

2011 335i xdrive N55. Having trouble finding engine oil leak. At first thought it was the turbo oil return line since it looked to be possible cause. Replaced both O rings and hose clamps since the one use clamps were loose. This did not fix the oil leak. Any ideas where it could be coming from based on pics? Or other areas to look? Pics looking up from bottom passenger side

Street of Rage · 02-23-2021, 11:37 AM

That's the water pump.. Could possibly be the valve cover gasket leak from passenger side

georgewny · 02-23-2021, 11:51 AM

I would suspect its coming from the valve cover.
Have you tried just running a paper towel or a clean rag around the sides of the valve cover?

drwillb · 02-23-2021, 05:16 PM

Other places to look:

Timing chain tensioner
Camshaft position sensor
Exhaust vanos solenoid

Worst case, but not likely: bedplate gasket

Nickster2304 · 02-28-2021, 07:53 PM

Thanks all. Now cannot get hood open. Drivers side hood release cable must of popped off. Pulled left front tire off and wheel well cover off only to find cable off on drivers side. Passenger side still works.

02-20-2021, 08:26 PM	#1
Nickster2304 Registered 0 Rep 4 Posts Drives: BMW 335xi Join Date: Aug 2020 Location: Rockford, IL iTrader: (0)	2011 335i xdrive N55. Having trouble finding engine oil leak. At first thought it was the turbo oil return line since it looked to be possible cause. Replaced both O rings and hose clamps since the one use clamps were loose. This did not fix the oil leak. Any ideas where it could be coming from based on pics? Or other areas to look? Pics looking up from bottom passenger side Attached Images
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02-23-2021, 11:37 AM	#2
Street of Rage Second Lieutenant 60 Rep 217 Posts Drives: 2011 BMW 335i e92 Join Date: Aug 2017 Location: 818 Northridge iTrader: (0)	That's the water pump.. Could possibly be the valve cover gasket leak from passenger side __________________
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02-23-2021, 11:51 AM	#3
georgewny New Member 43 Rep 23 Posts Drives: 2011 335 ix, 04 Mercedes SL600 Join Date: Nov 2017 Location: Long Island, NY iTrader: (0)	I would suspect its coming from the valve cover. Have you tried just running a paper towel or a clean rag around the sides of the valve cover? __________________ 2014 Mercedes C300 2011 BMW 335ix 2004 Mercedes SL 600 V12 twin turbo
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02-23-2021, 05:16 PM	#4
drwillb BMW Fan 289 Rep 838 Posts Drives: e30 M3, e30 M3, e46 M3 Join Date: Aug 2008 Location: northern NJ iTrader: (4)	Other places to look: Timing chain tensioner Camshaft position sensor Exhaust vanos solenoid Worst case, but not likely: bedplate gasket __________________ 2012 135i Mods: air scoops, CP, K&N filter, PS1, ADE FMIC, BMW PE, JB4, 1M front body, full M3 suspension front and rear, M3 brakes front and rear, M3 rear subframe and LSD Owned so far: 88 M3 x 2, 95 325is, 95 M3 x 2, 06 Mini Cooper S, 08 335 xi, 09 Z4 35i, 01 M3, 12 135i
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02-28-2021, 07:53 PM	#5
Nickster2304 Registered 0 Rep 4 Posts Drives: BMW 335xi Join Date: Aug 2020 Location: Rockford, IL iTrader: (0)	Thanks all. Now cannot get hood open. Drivers side hood release cable must of popped off. Pulled left front tire off and wheel well cover off only to find cable off on drivers side. Passenger side still works.
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