Re: Problem with Engine Knock

Posted by Richard Taylor On 2008/2/28 16:48:52

I had the same problem with the six in my 38,so I pulled the engine last monday.When I pulled the pan it was pretty clear that the #2 main was failing.I don't think the pan had ever been off and cleaned.It had about 3/4" of crud in the bottom and in the lifter galery.
Try this when the engine is knocking,ground each spark plug(one at a time)and listen to the knock.If the knock doubles it's probably a rod bearing on the cylinder that was grounded.
I also had cam bearings due the same thing,but it had large drop in oil pressure when the engine was warmed up.