Has anyone come accross oil in the back spark plug holes?
I changed the plugs at 100K and discovered this little surprise.

No oil consumption or external leaks associated with this.

 

yep its your valve covers not the gaskets the seals around the spark plug wells themselves the really crappy part is you cant buy just the seal you have to buy the whole valve cover.

 

That's a sweet design, thanks.

Monty

 

https://my350z.com/forum/engine-and-drivetrain/314267-valve-cover-swap.html

thats why i opened that post
i found out that only difference is pcv location.

would you like to be the gunny pig and try the swap? it will cost less for sure just have to reroute some hoses.

 

if you decide to try it best playce to go through is www.car-part.com search for QX4 valve covers. 2001 . they are dirt cheap i saw some for under 30 each. for under 100 bucks i think its worth a try...better then paying ~400 for new plastic valve covers.

 

how much oil did you have, when i changed my plugs the first time i had some blow by on the back 2 plugs, the second time i changed it there was no oil

 

Sorry I was wrong. I posted a link to seals that were actually for the valves themselves. I finally noticed that 24 are required for the car. Nevermind.

 

Read this thread. Lots of good info in there:

https://my350z.com/forum/engine-and-drivetrain/338094-valve-covers-symptoms.html