water in oil???
CF Veteran
Joined: Nov 2010
Posts: 5,840
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From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
Test to confirm. Good data = good decisions.
A simple compression test would most likely tell the story. Also a good "snapshot in time" of the internal condition of your engine.
Having low compression numbers on two adjacent cylinders is most likely a blown head gasket.
Spec compression for the 4.0 is 120-150 psi, with no more than a 30 psi variation between cylinders.
A simple compression test would most likely tell the story. Also a good "snapshot in time" of the internal condition of your engine.
Having low compression numbers on two adjacent cylinders is most likely a blown head gasket.
Spec compression for the 4.0 is 120-150 psi, with no more than a 30 psi variation between cylinders.
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