"Howdy,i have a 1985 260 weeke
"Howdy,i have a 1985 260 weekender with the 260 merc, eng runs good but when i run WOT 4500 rpm the temp guage climbs to just about the red,if i back off the power 300-400 rpm the needle drops right to halfway mark and will stay,drop it to idle and it goes below...