Ignition coil got oil on it.

Tengiz543 · 02-08-2026, 12:35 PM

Hey guys. Was going to do spark plugs on my BMW M850i, when I took out the first ignition coil on the drivers side. I noticed there was oil on the boot of the ignition coil. What do you guys recommend. It’s still under warranty.

vt100 · 02-08-2026, 01:00 PM

you need a new valve cover gasket.

Tengiz543 · 02-08-2026, 01:16 PM

Quote:

Originally Posted by vt100

you need a new valve cover gasket.

Understood thank you

afadeev · 02-08-2026, 01:37 PM

Quote:

Originally Posted by Tengiz543

Hey guys. Was going to do spark plugs on my BMW M850i, when I took out the first ignition coil on the drivers side. I noticed there was oil on the boot of the ignition coil. What do you guys recommend. It’s still under warranty.

If it's under warranty - take it to the dealer!

Quote:

Originally Posted by vt100

you need a new valve cover gasket.

Technically, it is not the valve cover gasket but the spark plug tube seals, although the two are typically sold together. If you do one, you will be doing the other as well. On both cylinder banks.

HTH,
a

Tengiz543 · 02-08-2026, 01:42 PM

Quote:

Originally Posted by afadeev

Technically, it is not the valve cover gasket but the spark plug tube seals, although the two are typically sold together. If you do one, you will be doing the other as well. On both cylinder banks.

HTH,
a

Sounds good. Thank you

Redd · 02-08-2026, 06:30 PM

Leaky plug tube

Tengiz543 · 03-04-2026, 08:16 AM

Hi guys just an update here. Took it to the dealer they do say it was a valve cover gasket leak, I had oil in cylinders 5 and 6.
Once they had everything apart they did find coolant leaking from turbo solinoid, and they got that fixed up too. Everything was done under warranty. Thanks for everyone that responded and helped.

///Joost · 03-04-2026, 04:37 PM

Quote:

Originally Posted by Tengiz543

Hi guys just an update here. Took it to the dealer they do say it was a valve cover gasket leak, I had oil in cylinders 5 and 6.
Once they had everything apart they did find coolant leaking from turbo solinoid, and they got that fixed up too. Everything was done under warranty. Thanks for everyone that responded and helped.

Great to hear, and good to see the dealer proactively take of the coolant issue. Happy motoring!

02-08-2026, 12:35 PM	#1
Tengiz543 Registered 16 Rep 18 Posts Drives: BMW M850i GC Xdrive Join Date: Dec 2025 Location: Charlotte NC iTrader: (0)	Ignition coil got oil on it. Hey guys. Was going to do spark plugs on my BMW M850i, when I took out the first ignition coil on the drivers side. I noticed there was oil on the boot of the ignition coil. What do you guys recommend. It’s still under warranty. Attached Images
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02-08-2026, 01:00 PM	#2
vt100 Lieutenant 416 Rep 539 Posts Drives: '06 Z4MC, '12 128i Join Date: Apr 2019 Location: SFO iTrader: (1)	you need a new valve cover gasket.
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02-08-2026, 06:30 PM	#6
Redd Brigadier General 5039 Rep 4,842 Posts Drives: 2010 BMW E92 M3 Dakar Edition Join Date: Jul 2015 Location: Malaysia iTrader: (0)	Leaky plug tube
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03-04-2026, 08:16 AM	#7
Tengiz543 Registered 16 Rep 18 Posts Drives: BMW M850i GC Xdrive Join Date: Dec 2025 Location: Charlotte NC iTrader: (0)	Hi guys just an update here. Took it to the dealer they do say it was a valve cover gasket leak, I had oil in cylinders 5 and 6. Once they had everything apart they did find coolant leaking from turbo solinoid, and they got that fixed up too. Everything was done under warranty. Thanks for everyone that responded and helped.
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