Oil leak

Tpriest7893 · 11-26-2019, 08:03 PM

Recently got some maintenance done and my mechanic mentioned that everything looks great, he noticed a very small oil leak from the back of the block. That's all he told me. He is very good but he isn't too knowledgeable within bmw cars. I have read a few different oil leak scenarios here but wanted to see if anyone experienced this or knows what it could " possibly" be tied too. 2012 bmw 335i. 79k miles.

Thank you

Marlinman · 11-27-2019, 05:07 AM

If he only saw it on the back of the motor, I suppose it could be the valve cover gasket as other frequent areas of oil leakage present more towards the front or bottom of the motor (oil filter housing gasket or oil pan gasket). I'd start by looking around the motor where the valve cover gasket mates the two pieces, usually you can see some evidence of leakage. Most guys won't even pick this leak up until it starts to drip over on the passenger side onto the DP or turbo and start "smoking". Good Luck.

F32Fleet · 11-27-2019, 07:29 AM

Valve cove gasket especially if it's at the left rear (Your engine is actually rotated towards the passenger side of the car) because that's where oil pools.

It's an annoyingly expensive fix because of the labor required to remove all the crap sitting on top/across the top of the valve cover (Fuel rail, ignition coils, electrical connectors, grounding wires, blah blah blah).,

Tpriest7893 · 11-27-2019, 07:59 AM

Thank you both, from have read that's what it sounds like. I'll keep an eye on it and if it gets worse it starts too I'll have him check that out. Gotta keep this far going for as long as I can lol

Tpriest7893 · 01-02-2020, 09:18 PM

Quote:

Originally Posted by Marlinman

If he only saw it on the back of the motor, I suppose it could be the valve cover gasket as other frequent areas of oil leakage present more towards the front or bottom of the motor (oil filter housing gasket or oil pan gasket). I'd start by looking around the motor where the valve cover gasket mates the two pieces, usually you can see some evidence of leakage. Most guys won't even pick this leak up until it starts to drip over on the passenger side onto the DP or turbo and start "smoking". Good Luck.

Quote:

Originally Posted by F32Fleet

Valve cove gasket especially if it's at the left rear (Your engine is actually rotated towards the passenger side of the car) because that's where oil pools.

It's an annoyingly expensive fix because of the labor required to remove all the crap sitting on top/across the top of the valve cover (Fuel rail, ignition coils, electrical connectors, grounding wires, blah blah blah).,

Just too update you both,
Got some stuff checked today from my local bmw and it's my valve cover gasket. They quoted me like 1600 too do it lol but my car has 900 miles left on warranty so there going to fix it under warranty along with a passenger restraint system sensor that went bad and my combox that had a faulty Bluetooth module.. 4K worth of shit for a $100 deductible lol

11-26-2019, 08:03 PM	#1
Tpriest7893 Captain 217 Rep 820 Posts Drives: Bmw 335i f30 N55 ( sold) Join Date: Nov 2017 Location: Venice Florida iTrader: (0) Garage List [0.00] 2012 bmw 335 [0.00] 02 2002 m3 Vert [0.00]	Oil leak Recently got some maintenance done and my mechanic mentioned that everything looks great, he noticed a very small oil leak from the back of the block. That's all he told me. He is very good but he isn't too knowledgeable within bmw cars. I have read a few different oil leak scenarios here but wanted to see if anyone experienced this or knows what it could " possibly" be tied too. 2012 bmw 335i. 79k miles. Thank you __________________ 2012 bmw 335i sedan VRSF catless DP VRSF 5? HD IC Stock intake(had open before and was sick of noise) BMS CP 550i 351m rims with 275/245 set up. No tune as of yet.
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11-27-2019, 05:07 AM	#2
Marlinman First Lieutenant 101 Rep 316 Posts Drives: 2013 335i xDrive Join Date: Jun 2015 Location: MD iTrader: (0)	If he only saw it on the back of the motor, I suppose it could be the valve cover gasket as other frequent areas of oil leakage present more towards the front or bottom of the motor (oil filter housing gasket or oil pan gasket). I'd start by looking around the motor where the valve cover gasket mates the two pieces, usually you can see some evidence of leakage. Most guys won't even pick this leak up until it starts to drip over on the passenger side onto the DP or turbo and start "smoking". Good Luck.
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11-27-2019, 07:29 AM	#3
F32Fleet Lieutenant General 3570 Rep 10,351 Posts Drives: 2015 435i Join Date: May 2005 Location: Southeastern US iTrader: (0)	Valve cove gasket especially if it's at the left rear (Your engine is actually rotated towards the passenger side of the car) because that's where oil pools. It's an annoyingly expensive fix because of the labor required to remove all the crap sitting on top/across the top of the valve cover (Fuel rail, ignition coils, electrical connectors, grounding wires, blah blah blah)., __________________ "Drive more, worry less. " 435i, MPPK, MPE, M-Sport Line
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11-27-2019, 07:59 AM	#4
Tpriest7893 Captain 217 Rep 820 Posts Drives: Bmw 335i f30 N55 ( sold) Join Date: Nov 2017 Location: Venice Florida iTrader: (0) Garage List [0.00] 2012 bmw 335 [0.00] 02 2002 m3 Vert [0.00]	Thank you both, from have read that's what it sounds like. I'll keep an eye on it and if it gets worse it starts too I'll have him check that out. Gotta keep this far going for as long as I can lol __________________ 2012 bmw 335i sedan VRSF catless DP VRSF 5? HD IC Stock intake(had open before and was sick of noise) BMS CP 550i 351m rims with 275/245 set up. No tune as of yet.
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