I have and 88 ford. A lot of oil is coming out of the breather cap, i purchased a new one and still having same problem.


Asked by Aug 10, 2015 at 10:20 PM about the 1988 Ford F-150 S Standard Cab 4WD LB

Question type: Maintenance & Repair

just bought a 88 for f-150 straight 6. Only has 100,986 miles on it. A lot of oil is spitting
out the breather cap right next to the oil cap. not sure how to fix this problem.

4 Answers


Check the PCV system, make sure there is a good vacuum supply to the valve and the fresh air tube and filter is clean for the PCV system. Remember these motors are low RPM torque motors, so keep the RPM's down. I never turned mine any faster than 3000 RPM. If it still kicks out oil after you have checked everything out then chances are high that the rings are worn out.

2 out of 2 people think this is helpful.

You shouldn't have a breather cap. There should be a tube going from the valve cover to the air cleaner assembly with a crankcase ventilation filter on the inside of the air cleaner assembly. HTH. -Jim

1 out of 1 people think this is helpful.
Andrew Olsen

It's called blow-by

1 out of 1 people think this is helpful.

Could be. Or it could be caused by a clogged or misrouted PCV (Positive Crankcase Ventilation) system. I used to get oil (blow by) in the air cleaner assembly of my '70 Catalina. But at 42 years old and nearly 200,000 miles I considered it normal. HTH. -Jim

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions


Looking for a Used F-150 in your area?

CarGurus has 216,434 nationwide F-150 listings starting at $1,900.


Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
Reputation 6,010
#2 dandyoun
Reputation 3,890
#3 tennisshoes
Reputation 2,300
View All

Related Models For Sale

Used GMC Sierra 1500"
1,024 Great Deals out of 56,287 listings starting at $2,499
Used Ford F-250"
603 listings starting at $3,995
Used Ford Mustang"
716 Great Deals out of 41,261 listings starting at $900
Used Ford Ranger"
259 Great Deals out of 7,727 listings starting at $988

Used Cars For Sale

2017 Ford F-150 For Sale
6,805 listings starting at $17,015
2016 Ford F-150 For Sale
134 Great Deals out of 137,883 listings starting at $16,985
2015 Ford F-150 For Sale
233 Great Deals out of 8,937 listings starting at $17,958
2014 Ford F-150 For Sale
494 Great Deals out of 10,874 listings starting at $10,450
2013 Ford F-150 For Sale
694 Great Deals out of 14,672 listings starting at $7,727