Engine Diagnostics - Intermix

[Jamesp]

Pull the plugs and look at each one. If it is a cracked head the clean / wet plug (or rusty if the engine has not been run) is the cylinder of interest. If they are all the same, it's not coming from the cylinder. next stop is the oil cooler. The head gaskets are bullet proof in this engine and an unlikely failure. Cracked heads are not uncommon, but can be welded up and used again.