99 Ford Ranger w/ 2.5l oil in water

Tiny
N19BMW
  • MEMBER
  • 1999 FORD RANGER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
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?
Friday, June 17th, 2011 AT 2:52 PM

2 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
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
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Friday, June 17th, 2011 AT 3:40 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Are you sure that it's not trans fluid from a bad cooler in the radiator?
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Friday, June 17th, 2011 AT 4:26 PM

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