front oil cap on 1989 jeep wrangler 4 cylinder leaks?

Asked by Oct 24, 2013 at 11:33 AM about the 1989 Jeep Wrangler

Question type: Maintenance & Repair

I have changed oil cap on top of valve cover various times, PCV valve is working and not obstructive as well as the filter on rear of top valve cover.  After driving oil seems to be pushed out from under the oil cap and pool on top of valve cover.  There is also no damage to the area on top of valve cover where oil cap goes.  Oil pressure is normal

2 Answers

98,395

That sounds like you have excessive blow by in the engine, as it is a 4 cylinder they run fairly hard in a Jeep so they wear out quicker, you might consider having a cylinder leak down test performed to determine how much compression is leaking passed the rings, a rebuild might be the only way to fix this.

105

You may also check the grommet for the PCV valve. I had a grommet damaged on the underside of the valve cover not allowing the PCV to go completely in ad therefore allowing oil to come out.

Your Answer

Jeep Wrangler Experts

  • #1
    tennisshoes
    Reputation
    410
  • #2
    Tom Demyan
    Reputation
    370
  • #3
    Mathew Wooldridge
    Reputation
    350
View All

Related Models For Sale

Used Jeep Cherokee
407 Great Deals out of 40,916 listings starting at $1,800
Used Ford Mustang
762 Great Deals out of 42,755 listings starting at $1,300
Used Ford F-150
2,231 Great Deals out of 181,369 listings starting at $1,500
Used Chevrolet Camaro
418 Great Deals out of 31,785 listings starting at $2,395
Used Toyota 4Runner
241 Great Deals out of 21,286 listings starting at $1,500
Used Chevrolet Corvette
252 Great Deals out of 22,296 listings starting at $2,500

Used Cars For Sale

2017 Jeep Wrangler For Sale
5 Great Deals out of 6,144 listings starting at $23,651
2016 Jeep Wrangler For Sale
16 Great Deals out of 800 listings starting at $22,499
2015 Jeep Wrangler For Sale
25 Great Deals out of 957 listings starting at $19,750
2014 Jeep Wrangler For Sale
22 Great Deals out of 810 listings starting at $16,991
2013 Jeep Wrangler For Sale
21 Great Deals out of 715 listings starting at $16,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.