Question about 1987 Ford Ranger

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88 Ranger-Coolant getting into the oil.

88 Ford Ranger, 2.9L V6, compression in all cylinders is 140 to 160psi, no adjacent cylinders read the same pressure. When the engine is started there is a massive cloud of smoke and steam/water vapor exiting the tailpipe. Did a cooling system pressure check and lost 7psi in about two minutes and did verify the leak by using a hose as a stethoscope. I heard a hissing/bubbling sound while listening at the oil filler on the valve cover. I did not hear any sound from the cylinders by listening at the plug holes or at the air intake with the butterfly open. I am guessing the most likely cause is the intake manifold gasket leaking into the crankcase. Am I on the right track or could there be another issue I am missing, I don't want to do any work that isn't necessary.

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  • georgeabb566 Mar 02, 2009

    There is a loss of power and the oil does look like coffee with creamer. However, there does not seem to be any seepage around the exterior of the heads and with good compression readings I didn't concern myself with the idea of a blown head gasket, perhaps I am wrong in thinking that way. Since I am going to be most of the way there, I have decided to change the head gaskets anyway and for good measure I have a guy who will surface the heads for me. Thanks.

  • georgeabb566 Apr 29, 2009

    Found cracks in both heads between the valves, 2 cylinders on the left bank and one on the right. Replaced the heads with an aftermarket product and it fired up the first crank with no smoke/steam coming from the tailpipe. I wish now I would have replaced the tappets as well, one is ticking now. Hind sight is twenty twenty!

  • stick_ind99 May 11, 2010

    could possibly be bad a gasket problem. Check for seapage around heads. Do you smell antifreeze while the truck is moving? Do you find slight loss of power? Check your engine oil see if it is not a light brownish color (looks like too much cream in a coffee)if it is, keep your ENGINE OFF and replace head gasket. I had same prob. with my old 76 ford couriour.

    also, do you notice the engine either takes longer to warm up or warms up alot faster than usual?

    check to see if your thermostat is working proper. If it hasn't been changed in awhile, it would be wise to change it now.

    Hope this helps.



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Your on the right track ,but i would go ahead and change the head gaskets also

Posted on Mar 01, 2009


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