Jump to content
SAU Community

Oil In Spark Plug Valley/chamber

jonathon

By jonathon,
in General Maintenance

 Share

Recommended Posts

jonathon Enthusiast

jonathon

Posted
Posted

Hi all, I have had some idling issues in a m35 stagea (vq25det) so I looked at my spark plugs.

I have found oil in the chamber where the coil pack lead runs - and all over the spark plug.

The spark plug was dripping with oil but from what I can see it is from the oil in the chamber as there does not seem to be oil in the piston area.

Any ideas on what's wrong?

Link to comment
https://www.sau.com.au/forums/topic/425649-oil-in-spark-plug-valleychamber/
Share on other sites
scotty nm35 Grand Master

scotty nm35

Posted
Posted

It is quite common to have a slow leak into the plug well, it doesn't affect the engine at all as oil is an insulator. To properly fix the leak you will have to replace the whole rocker cover (around $250) as the seals aren't replaceable, or you can attempt shoving silicone around the plug tube/seal. The rocker gasket will require replacement also while you are there.

This would also explain the oil burning smell when you turn the heater on.

Did you pull a plug? The last set I changed for someone had a 3mm gap. lol.

jonathon Enthusiast

jonathon

Posted
  • Author
Posted

Awesome - thanks for the info. I fortunately don't get any burnt oil smell!

Yeah I pulled a couple of plugs - gap was good - also was nice to see good quality platinum plugs in there as its a bi!&ch to get too!

scotty nm35 Grand Master

scotty nm35

Posted
Posted

When you launch there is only one way for the oil to go, down on to the turbo. (unless you have a DD?)

I find it fairly easy to get to the plugs, you only need to drop the intake/bov pipe...

Get into the Stagea section above ^^ there is plenty of reading for you to do. :)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      98 R34GTT 4k engine stumble

      By MBS206 · Posted

      List all of your mods. It sounds like an aftermarket ECU hitting rev limiter. Like a valet mode, or a cold rpm limiter? 
    • tylink720
      "Cheap" bolt on turbo on RB25DET NEO

      By tylink720 · Posted

      @Kapr Haha yeah thats the one. I missed that you had a built up engine, I wouldn't want to run it on there either then. It was good in my situation just to replace the original turbo on a stock engine. @MBS206Yep definitely not a replacement for anything name brand
    • Kapr
      "Cheap" bolt on turbo on RB25DET NEO

      By Kapr · Posted

      You are selling this? I have never bought something from marketplace...i dont know if i trust that enough. And the price is little bit "too" good...
    • Watermouse
      "Cheap" bolt on turbo on RB25DET NEO

      By Watermouse · Posted

      https://www.facebook.com/share/19kSVAc4tc/?mibextid=wwXIfr
    • Kinkstaah
      Airbox for +T

      By Kinkstaah · Posted

      It would be well worth deciding where you want to go and what you care about. Reliability of everything in a 34 drops MASSIVELY above the 300kw mark. Keeping everything going great at beyond that value will cost ten times the $. Clutches become shit, gearboxes (and engines/bottom ends) become consumable, traction becomes crap. The good news is looking legalish/actually being legal is slighly under the 300kw mark. I would make the assumption you want to ditch the stock plenum too and want to go a front facing unit of some description due to the cross flow. Do the bends on a return flow hurt? Not really. A couple of bends do make a difference but not nearly as much in a forced induction situation. Add 1psi of boost to overcome it. Nobody has ever gone and done a track session monitoring IAT then done a different session on a different intercooler and monitored IAT to see the difference here. All of the benefits here are likely in the "My engine is a forged consumable that I drive once a year because it needs a rebuild every year which takes 9 months of the year to complete" territory. It would be well worth deciding where you want to go and what you care about with this car.
×
×
  • Create New...