Quote:
Originally Posted by Sabesimpson
Prowbar,
Investigation complete! You were correct rear freeze plug @ camshaft bore. Oddly, it looks like someone replaced it. Guess i will be pulling the motor sooner then i wanted.
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Interesting. One check you can do before pulling the engine is to check if the camshaft drain hole is clear.
In the last cam journal, the closest one to the freeze plug, there is a small hole drilled (about .150") longitudinally in the journal to relieve the oil that gets trapped behind the camshaft galley and freeze plug. These can also get clogged with sludge and junk.
Remove the intake manifold and valley cover, then turn the engine so the drain hole is facing upwards. With a small screwdriver or drill bit, you should be able to poke it through.
Having it clogged or at least, close to clogged, build up excessive pressure causing the freeze plug to leak.
Hope this helps.