1997 TJ 4.0L 245,000miles - problem started with a difficult engine start. Once started the idle went to about 2,400RPM and would not go lower. Engine temp was steady above normal but below over temp line. After a short (5-10) minute drive through residential streets I put her back in the driveway. Popped the hood and the radiator reservoir was bubbling. There does not appear to be any oil in the antifreeze. However there is antifreeze in the oil.
From the research done so far it’s most likely the head gasket which, from research, would likely result in an engine replacement, or it could be a lower intake gasket leak, which is a rather simple fix.
Any recommendations on how to determine the if it’s the head gasket or the lower intake manifold? I assume that running the engine is not a good idea.
From the research done so far it’s most likely the head gasket which, from research, would likely result in an engine replacement, or it could be a lower intake gasket leak, which is a rather simple fix.
Any recommendations on how to determine the if it’s the head gasket or the lower intake manifold? I assume that running the engine is not a good idea.