Return to the Cars Forum | Post a Follow-Up

oil in spark plug holes?

Posted by ashortasiangirl (My Page) on
Sat, Aug 16, 08 at 14:54

Oil is leaking into the no. 1 spark plug hole and has started into the other two. Was checking the car over and found that the spark plug holes were half full of engine oil. All the valve cover bolts were tight, and as far as I know, the valve cover has never been removed. I was told to change the pcv valvue. Is there anything else i need to do? and is this a commom problem in cars? what do you think would be a reasonable price to pay to fix this?

Follow-Up Postings:

RE: oil in spark plug holes?

What is the year, make and model of your car? I am thinking that it could be the spark plug tube grommets (round rubber gasket) in the valve cover. Need to know what kind of car you have to be more helpful in solving your problem


RE: oil in spark plug holes?

If your spark plugs are in a deep hole/tube through the top of the valve cover, it is probably a leak beteeen the valve cover and engine top parts. There are soft seals at these joints.

If the valve cover is made of plastic, it likely has metal ferules in the bolt holes that limits how far the mounting bolts can be cranked down (protects from cracking the plastic). Over time (3 to 4 yrs), plastic valve covers have been known to shrink may begin to leak at the head/valve cover interface.

The cure to many of these leaks is a new gasket set.

RE: oil in spark plug holes?

Toyota's have this problem depending on what engine is in the car. My 86 Supra had this problem, it was a secondary gasket on the top of the motor which had aged allowing oil to seep into the spark plug holes.

RE: oil in spark plug holes?

This problem is not limited to Toyota. Our '97 Saturn, dual OHC engine, had the identical problem.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Cars Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here