The water issue I had too! You're gonna hate it but its the freeze plugs on the back of the heads. BOTH of them need to be replaced. You can try some other "fixes" like a 2 part epoxy but then youre no longer going to have the plug go if it freezes. The only way to get the freeze plugs is to pull heads.

Last edited by BigBlock6; 05/19/2014 7:49 PM.