Valve cover gasket problem..

335iNavyGuy · 05-05-2015, 07:56 PM

**UPDATE**

Fuel injectors seemed to be really dirty near the nozel, so i cleaned them as well. starting the RE assemble now.

So my main problem -

Car randomly starts to misfire (no actual code) random misfire making the car run rough between 2 and 3k rpm.

Under hard acceleration car runs fine no problems.

Oil was present on spark plugs, people suggested valve cover gasket..

Well today i got to my valve cover gasket.. only to find out

Its in PERFECT condition ... im going to replace it anyways, but it looks almost brand new.
So what now :/

So far only PRO of this whole situation, is a good chance to clean out all the crud from when i did my own walnut blasting....

OLD GaskET

Wires · 05-05-2015, 08:05 PM

I did a plug swap and found oil on one plug. Turned out I got "sloppy" on the last oil change, and plug #3 is where that oil wants to pool around (so gasket and plug are fine, just the oil runs into the hole when you pull the coil).

Might be the same deal with you?

stanlalee · 05-05-2015, 08:25 PM

I didn't know you could tell its leaking by just looking at its condition. May look fine and not sealing perfectly (speculation). If you have oil on top of the spark plugs there's not many ways for it to get there.

335iNavyGuy · 05-05-2015, 08:40 PM

Quote:

Originally Posted by stanlalee

I didn't know you could tell its leaking by just looking at its condition. May look fine and not sealing perfectly (speculation). If you have oil on top of the spark plugs there's not many ways for it to get there.

Fair point, im putting the new one on as we speak, i also cleaned everything, fuel injectors, spark plugs, etc. Hopefully it just works.

KeepRidingDirty · 05-06-2015, 07:11 AM

You could also have a cracked valve cover. Happens a lot, causes oil leaks into spark plug holes. Something to watch out for.

335iNavyGuy · 05-06-2015, 02:54 PM

Quote:

Originally Posted by KeepRidingDirty

You could also have a cracked valve cover. Happens a lot, causes oil leaks into spark plug holes. Something to watch out for.

I still have it off so ill inspect it really good.

And no i wont just use my eyes lol, ill use a DYE and black light to search out cracks.

Good idea though thanks

05-05-2015, 07:56 PM	#1
335iNavyGuy Colonel 205 Rep 2,349 Posts Drives: 07 N54 E92 Join Date: May 2013 Location: San Diego CA iTrader: (3)	Valve cover gasket problem.. UPDATE Fuel injectors seemed to be really dirty near the nozel, so i cleaned them as well. starting the RE assemble now. So my main problem - Car randomly starts to misfire (no actual code) random misfire making the car run rough between 2 and 3k rpm. Under hard acceleration car runs fine no problems. Oil was present on spark plugs, people suggested valve cover gasket.. Well today i got to my valve cover gasket.. only to find out Its in PERFECT condition ... im going to replace it anyways, but it looks almost brand new. So what now :/ So far only PRO of this whole situation, is a good chance to clean out all the crud from when i did my own walnut blasting.... OLD GaskET __________________ 07 E92 Jb4-G5 - Sport Exhaust - Titek BOV BBS Lm reps - AFE dual cone intake Last edited by 335iNavyGuy; 05-05-2015 at 08:39 PM..
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05-05-2015, 08:05 PM	#2
Wires Brigadier General 1646 Rep 4,877 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	I did a plug swap and found oil on one plug. Turned out I got "sloppy" on the last oil change, and plug #3 is where that oil wants to pool around (so gasket and plug are fine, just the oil runs into the hole when you pull the coil). Might be the same deal with you?
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05-06-2015, 07:11 AM	#5
KeepRidingDirty Professional Monkey Trainer 65 Rep 423 Posts Drives: 2007 BMW 335xi Join Date: Aug 2014 Location: Ottawa, On iTrader: (1)	You could also have a cracked valve cover. Happens a lot, causes oil leaks into spark plug holes. Something to watch out for. __________________ JB4 G5 ISO / ER Charge Pipe and Tial BOV / Wagner FMIC / CYBA Tips & Air Scoops / AFE DCI / BMW PE Exhaust Mod / M3 Rep Bumper / Dynavin E9x
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05-05-2015, 08:25 PM	#3
stanlalee Major 261 Rep 1,093 Posts Drives: 07' E92 335i manual Join Date: Oct 2013 Location: Newport News, Va iTrader: (0)	I didn't know you could tell its leaking by just looking at its condition. May look fine and not sealing perfectly (speculation). If you have oil on top of the spark plugs there's not many ways for it to get there.
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