1988 Jeep Wagoneer Oil blow by into air filter

FARMERBO

MEMBER
1988 JEEP WAGONEER
6 CYL
4WD
AUTOMATIC
154,000 MILES

I have an 88 Jeep Wagoneer with a I6 engin. It runs well but I have a bad problem of oil blowing out of the valve cover and into the air filter. I am loosing a 1/2 quart a week and having to constantly replace the air filter. What is causing this and how do I fix it. I tried to put a breather element in the system and bypass the line to the air filter but the pressure in the valve cover was high and this did not work well.

Help

1 Reply

BLACKOP555

MECHANIC
10,371 POSTS

Check the crankcase breather tube/filter also check the pcv valve for proper operation.

If thats all good, make sure you are not overfilling the crankcase with oil.

Try thicker oil. Try thinner oil.