Hello all, I am in the midst of replacing my 4.6 motor on my 96 with a new one I purchased online. (The new one isn't off a '96, it was manufactured in '99 and doesn't have pi heads so I'm thinking it might be off an explorer or something.)I have the old one pulled and am preparing the new one to be dropped in.
When I got the new motor I noticed a lot of heavy black build up, primarily on the block itself around the pulleys. It is a very thick black substance that feels kind of moist to the touch. I cleaned a lot of it off with a wire brush and when cleaned it kind of crumbles up into tiny pieces that just look like dirt.
So my question is does this sound like carbon build up or burned up oil or something else? My old engine had a very thin black coating on it but nothing like this. The heads look quite clean so I'm thinking it isn't a bad valve cover gasket.
I'm replacing a few gaskets (exhaust manifold, intake manifold, oil pan) before installing the new motor because I would like this thing to be leak free once it's installed.
If anyone has had a similar experience or has insight to offer on this subject please let me know.
When I got the new motor I noticed a lot of heavy black build up, primarily on the block itself around the pulleys. It is a very thick black substance that feels kind of moist to the touch. I cleaned a lot of it off with a wire brush and when cleaned it kind of crumbles up into tiny pieces that just look like dirt.
So my question is does this sound like carbon build up or burned up oil or something else? My old engine had a very thin black coating on it but nothing like this. The heads look quite clean so I'm thinking it isn't a bad valve cover gasket.
I'm replacing a few gaskets (exhaust manifold, intake manifold, oil pan) before installing the new motor because I would like this thing to be leak free once it's installed.
If anyone has had a similar experience or has insight to offer on this subject please let me know.