Oil on spark plug

kguyott7 · 03-26-2015, 09:46 PM

i was getting misfires when running jb4 so i decided to change my spark plugs. They were well over due. Didn't appear previous owner had ever done them. When doing so i removed the plug in cylinder number 2 and it was covered in oil. Cleaned out the oil the best i could and replaced with new plugs. Im curious as to why i have oil on my plug? a leaking gasket somewhere? Car ran great and pulled hard for a few weeks but now misfires are back so i figure ill fix the oil issue while I'm in there swapping coils and figuring out the misfire. Any advice is greatly appreciated!

kguyott7 · 03-27-2015, 07:20 AM

bump! someone out there has an answer for me cmon!

MightyMouseTech · 03-27-2015, 07:22 AM

Leaking valve cover gasket or cracked valve cover. Very common. I would replace that ignition coil if it has been oil soaked.

kguyott7 · 03-27-2015, 06:47 PM

That was my guess. Thanks for the input!

cbl117 · 03-28-2015, 02:08 AM

Quote:

Originally Posted by kguyott7

That was my guess. Thanks for the input!

I had oil in the spark plug holes. It ended up being a cracked valve cover.

dknybmw31 · 03-28-2015, 07:39 AM

I had same issue and replaced the valve cover. I hope it's under warranty! The cost to have this replaced out of warranty is between $500-$650.00.

BRR · 03-28-2015, 08:24 PM

Maybe you need a new pcv valve and an oil catch ?

Helltime · 03-29-2015, 06:17 PM

This happened to me as well, it ended up being a cracked valve cover.

03-26-2015, 09:46 PM	#1
kguyott7 Enlisted Member 3 Rep 30 Posts Drives: 2009 BMW 135i Join Date: Jan 2015 Location: Omaha, NE iTrader: (1)	Oil on spark plug i was getting misfires when running jb4 so i decided to change my spark plugs. They were well over due. Didn't appear previous owner had ever done them. When doing so i removed the plug in cylinder number 2 and it was covered in oil. Cleaned out the oil the best i could and replaced with new plugs. Im curious as to why i have oil on my plug? a leaking gasket somewhere? Car ran great and pulled hard for a few weeks but now misfires are back so i figure ill fix the oil issue while I'm in there swapping coils and figuring out the misfire. Any advice is greatly appreciated!
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03-27-2015, 07:20 AM	#2
kguyott7 Enlisted Member 3 Rep 30 Posts Drives: 2009 BMW 135i Join Date: Jan 2015 Location: Omaha, NE iTrader: (1)	bump! someone out there has an answer for me cmon!
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03-27-2015, 07:22 AM	#3
MightyMouseTech Major General 4338 Rep 6,196 Posts Drives: 13 135i 6MT LeMans Blue MSport Join Date: Feb 2013 Location: Ottawa, Canada iTrader: (0)	Leaking valve cover gasket or cracked valve cover. Very common. I would replace that ignition coil if it has been oil soaked.
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03-27-2015, 06:47 PM	#4
kguyott7 Enlisted Member 3 Rep 30 Posts Drives: 2009 BMW 135i Join Date: Jan 2015 Location: Omaha, NE iTrader: (1)	That was my guess. Thanks for the input!
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03-28-2015, 07:39 AM	#6
dknybmw31 Second Lieutenant 42 Rep 243 Posts Drives: 2010 BMW 135i, 07 335i,13 X3 Join Date: Nov 2010 Location: Ohio iTrader: (6)	I had same issue and replaced the valve cover. I hope it's under warranty! The cost to have this replaced out of warranty is between $500-$650.00. __________________ 135i M Sport \| Alpine white with Coral Red \|MHD Stage 1 \| \|18 VMR 710\| Icarbon Diffuser \|CF Spoiler\| \|BMW Performance Exhaust \|Black Kidney Grill \| \| Blackline Tailights \| \|Kerscher Front Lip \| \| BMW Performance Springs \| Koni Yellow Shocks \| M3 Swaybar
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03-28-2015, 08:24 PM	#7
BRR Private 8 Rep 99 Posts Drives: 2009 Space Grey 135i Join Date: Jan 2015 Location: LA area iTrader: (0)	Maybe you need a new pcv valve and an oil catch ?
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03-29-2015, 06:17 PM	#8
Helltime Private 2 Rep 80 Posts Drives: 09 135i sport package Join Date: Mar 2014 Location: Iowa iTrader: (0)	This happened to me as well, it ended up being a cracked valve cover. __________________ 2009 135i 6MT jb4, ER CP, Tial BOV, 7" VRSF FMIC, BMS DCI, BMS 91 Pump flash running 35% e85 09 G8 GT 05 GTI 1.8T 5spd
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