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E85 / E86 Z4 (2003-2008)
E85 Z4 convertible and E86 Z4 coupe talk with our BMW gurus here.

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  #1  
Old 07-24-2012, 03:51 AM
invmonkey invmonkey is offline
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2005 Z4 pics attached, need new rocker cover gasket?

Hi Guys,

Bit of smoke from under the bonnet after leaving the car for a couple of days without driving. Quickly burns off, but smells like oil while it does. I've taken some pics of an oily looking region on the engine, is this indicative of needing a new gasket or something else? Whats a reasonable price for work and parts seeing as I'm not really skilled in this area whatsoever and don't want to break it!

Thanks guys!
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  #2  
Old 07-24-2012, 06:48 PM
suthtow suthtow is offline
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A good Indy shop should be in the 300-400 range depending on where you live.

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Old 07-25-2012, 08:08 AM
invmonkey invmonkey is offline
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Great thanks. Anybody know if that is the most likely cause of the oil?
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Old 07-25-2012, 09:12 AM
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BeemerMikeTX BeemerMikeTX is offline
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Quote:
Originally Posted by invmonkey View Post
Great thanks. Anybody know if that is the most likely cause of the oil?
You mean other than leaking past the profile (valve cover) gasket?
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Old 07-25-2012, 09:37 AM
invmonkey invmonkey is offline
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I was just wondering if the valve cover was the most likely culprit or if there were other potential sources of the problem
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Old 07-25-2012, 11:10 AM
Mikey48 Mikey48 is offline
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Hey, My 2004 Z4 did the same thing. It was the valve cover gasket. Got one off of the net and replaced it myself. The old one was a mess ! It fell apart in my hands. Good luck !
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Old 07-25-2012, 12:24 PM
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BeemerMikeTX BeemerMikeTX is offline
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Originally Posted by invmonkey View Post
I was just wondering if the valve cover was the most likely culprit or if there were other potential sources of the problem
Sorry, from the title of your thread and the responses, it sounded like you already knew about this well-known leak. I have this same minor leak on my M54 and need to replace the profile gasket at the next opportunity.

As an aside, in the old days when we had to adjust the valves periodically on almost every car, which required removing the valve covers, we were routinely replacing the valve cover gasket(s) so everyone had experience doing this "repair" (and I still get this experience with my 1972 911). We've gotten spoiled about this source of oil leaks.
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"That's right, you're not from Texas, but Texas wants you anyway." -LL
2001 Z3 3.0i Roadster (Topaz Blue Metallic, 5-speed manual, Sport Package, CD radio, heated seats and mirrors, non-power top via special order)
"Beemer" is for my BMW motorcycles - '13 K1300S, '95 R1100RS, '88 K75S, '75 R90S (gone, but not forgotten).

Last edited by BeemerMikeTX; 07-25-2012 at 02:58 PM.
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Old 07-26-2012, 04:03 AM
Mikey48 Mikey48 is offline
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When you replace the valve cover gaskit you also have 15 rubber grommets that are under the valve cover gasket bolts that should also be replaced. There are also 2 more gaskits that surround the spark plug holes that also need to be replaced. You see these 2 when the valve cover is removed. If you purchase a quality gaskit kit these will all come together. I purchased mine out of the motors section on ebay, got a great price on it and it was a quality gaskit kit. Later.
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  #9  
Old 11-06-2012, 04:58 AM
jmslovatt jmslovatt is offline
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Thanks Guys

Really appreciate the advice.

I have been really busy at work so instead of doing it myself I took it to a local garage to sort it out. They're known to be quite reliable, however I'm starting to think this may have been a mistake. They replaced the cover gasket, but a few weeks later and I am finding the same problem happening again.

Is there anything else that can cause these symptoms or am I looking at a case of them not really carrying out the work correctly?

Thanks again
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