Posted 11/16/2008 20:46 (#508580 - in reply to #508544) Subject: RE: JD 466 motor problem
Eastern VA. No such thing as too many Magnums.
You might just need an exhaust gasket. There are gaskets between the exhaust manifold and the head. All my Magnums have needed at least one out of 6 at some point. I haven't looked at a 4440 or 4960 lately, but I think they have a similar setup.