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[amba]

Last year I replaced both cam cover seals and O rings as existing had started weeping and expect they were originals.

Since then all has been spotlessly dry of oil until I noticed last week the back top bolt head on the passenger side cover had traces of oil appearing around the edges and starting to mist onto the black cover.My assumption is either the O ring has let go or maybe it got displaced when I fitted them last year but would of expected to see oil before now.They were all torqued correctly to 8nm and genuine parts were used.

My plan is to remove the bolt completly...clean away the oil from the cover and refit the bolt with a rubber washer in between the cover top and the bolt/washer as I think it is over kill removing the oil tight cover completly along with the cost of a new cam gasket/8 O rings and the potential for it to possibly happen again.

Breathers are clean and all else seems fine so just wanted to run the above by for comments or if anybody has had this happen before and resolved in a similar way

[Sir Tigger KC]

Good plan.    Alternatively a smear of black goo around and under the bolt head?   

[amba]

That was my plan  ..to fit maybe another O ring on the outside of the cover and a squirt of black seal.

Just curious if this had happened to anybody before 

[BazaJT]

Have you re-checked the torque of the bolt in case it's loosened off a little[I believe this has been known to happen-albeit rarely]?

[amba]

I will check it when I take the plenum etc off next Saturday ,as that would be my first thought ,but wanted to have a plan "B" if it didn't seem loose .

[Doctor Gollum]

Before getting carried away, re torque the bolts

[amba]

Agree but always like a plan B ...just in case 

[TheBoy]

yup, retorque, as they do come loose.

Then if still bad, try out some of your other solutions.


Always clean the breathers regularly.