99 ford ranger w/ 2.5l oil in water

1999 FORD RANGER
100,000 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
N19BMW
  • MEMBER
  • 1 POST
99 ford ranger with 2.5 dual plug engine. got oil in water. failed compression check on #4 about 50psi difference. removed head and tested. machine shop says it is good. head gasket was in tact. has new radiator. what is left and how to check?
Jun 17, 2011 at 2:52 PM
Advertisement
Avatar
DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
If head and valves good and say gasket O.K. then that leaves rings and cylinder wall wear. If engine was still intact a simple leak down test would tell
Jun 17, 2011 at 3:40 PM
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
Are you sure that it's not trans fluid from a bad cooler in the radiator?
Jun 17, 2011 at 4:26 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.