1997 Taurus 3.0 "U" engine, 107,000 miles. Head Qu

Tiny
JUSTDON
  • MEMBER
  • 1997 FORD TAURUS
I have found that I have coolant leaking into the oil. One mechanic has told me that the heads on my engine are cast iron, and he doesn't believe the problem to be there.

He does think that the intake manifold is either cracked or leaking at the gaskets. When I called the local auto parts store to price an intake check, the manager told me that they have not been seeing many intake problems with 97 taurus's. He did say that their experience shows that the heads themselves are being ruined when this engine overheats. He believes that I need new heads.

Any help would be greatly welcomed.
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Saturday, October 20th, 2007 AT 2:10 PM

5 Replies

Tiny
MERLIN2021
  • EXPERT
Do a radiator pressure test to remove all doubt, in either case the intake manifold must come off. If the intake is leaking, a pressure test will make it obvious.
If you do it follow the tools instructions for checking head gaskets!
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Saturday, October 20th, 2007 AT 2:40 PM
Tiny
JUSTDON
  • MEMBER
Took it for a pressure test and the mechanic said that it held the pressure fine. He also checked for combustion gasses in the coolant and said that there wasn't any.

The coolant in the oil was found after dye was placed in the coolant and the car driven for about 4 days, which is when I noticed that the coolant was getting low again in the plastic bottle.

Under UV light, I could see a small amount of dye in the oil on the dipstick and on the bottom of the oil fill cap.
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Monday, October 29th, 2007 AT 4:30 PM
Tiny
MERLIN2021
  • EXPERT
Try changing you PCV! You are descibing what happens when it's clogged! If preesure test is good, and block test is good, you do not have a head gasket problem. The only other problem I can think of would also fail a pressure test, and that would be the water pump.
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Monday, October 29th, 2007 AT 6:29 PM
Tiny
JUSTDON
  • MEMBER
A stopped up PCV would cause coolant to enter the oil? How would that happen?

When the pressure test was done, the mechanic pumped it up to 16 psi. And let it sit for about 20-30 min. It lost 2 psi. And he said that it could have been from the rubber adapter. Does that sound reasonable to you?
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Tuesday, October 30th, 2007 AT 4:44 AM
Tiny
MERLIN2021
  • EXPERT
What I think is you don't have any coolant in the oil, if the PCV is clogged, you get moisture from condensation. Thus the white goo build up!
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Tuesday, October 30th, 2007 AT 12:37 PM

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