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

93,095

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

Add photo

Related Questions

  • I have a 1989 jeep Sahara six cylinder 258. 3 answers

    When I drive my jeep and come to a stop it dies. Runs good most of the time. Just when I come to a stop and press the clutch, the RPM goes down and the engine dies.

    1989 Jeep Wrangler Sahara

    -

    Maintenance & Repair

  • 2008 Wrangler Rust Issues anyone? 46 answers

    I bought a new 2008 Wrangler Unlimited (Yellow) a little over two months ago. It now has 2,302 miles on it and am noticing rust all over the exhaust pipes, muffler, driveshaft, and rear suspension. ...

    2008 Jeep Wrangler

    -

    Maintenance & Repair

  • 2000 Jeep Wrangler 4.0L Automatic Radiator Replacement 3 answers

    Would like to replace my radiator that seems to leak occasionally, most recently on a 16 degree night with a better (non crimped all metal 2-row) radiator.

    2000 Jeep Wrangler Sport

    -

    Maintenance & Repair

  • 98 Jeep Wrangler- 4 Cyl. Loss of Oil Pressure 5 answers

    After driving my Jeep to IL from PA, I noticed a loss of power. Car stalled. Pulled over. Tried to start it sputtered. Have gas. No visible leaks (at Night). Had to tow it last 10 miles to destinati...

    1998 Jeep Wrangler SE

    -

    Maintenance & Repair

  • Value of 89 Jeep Wrangler, 6 Cylinder, 4wheel drive 3 answers

    I am interested in selling my 1989 Jeep Wrangler Sahara but can't find a value on it. It has 125,000 miles, 5 speed, 4 wheel drive, after market air (works great), no rust (Arizona Jeep), tranmission ...

    1989 Jeep Wrangler

    -

    Shopping & Pricing

Search Jeep Wrangler Questions

Jeep Wrangler Experts

#1 Tom Demyan
Tom Demyan
Reputation 370
#2 tennisshoes
tennisshoes
Reputation 360
#3 Mathew Wooldridge
Mathew Wooldridge
Reputation 340
View All

Related Models For Sale

Used Jeep Cherokee
459 Great Deals out of 52,444 listings starting at $1,800
Used Ford Mustang
470 Great Deals out of 45,735 listings starting at $1,999
Used Ford F-150
2,194 Great Deals out of 206,316 listings starting at $1,499
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Toyota 4Runner
254 Great Deals out of 20,494 listings starting at $1,800
Used Chevrolet Corvette
119 Great Deals out of 20,753 listings starting at $3,000

Used Cars For Sale

2017 Jeep Wrangler For Sale
3 Great Deals out of 7,447 listings starting at $23,496
2016 Jeep Wrangler For Sale
16 Great Deals out of 1,170 listings starting at $22,999
2015 Jeep Wrangler For Sale
17 Great Deals out of 978 listings starting at $19,966
2014 Jeep Wrangler For Sale
19 Great Deals out of 965 listings starting at $17,888
2013 Jeep Wrangler For Sale
34 Great Deals out of 880 listings starting at $16,900

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.