marky1212
Member
"I have a 87 7.4 alpha 1 sea w
"I have a 87 7.4 alpha 1 sea water cooled that slowly runs up to 200 degrees with water ears on or in the water. I have replaced sea water pump,motor water pump,thermostat (140 degrees), temp guage and sender. I have taken the risers off and checked them and they look ok. The riser on one side does run about 30 degrees warmer than the other 130 verses 100 on the other side. The hose coming out of the bottom of the exhaust manifold on one side is about 190 and 160 on the cooler side. Water coming out the transom is about 130 with my infrared gun, yet the boat guage says 200. Im stumped! PLEASE HELP!!! THANKS."
"I have a 87 7.4 alpha 1 sea water cooled that slowly runs up to 200 degrees with water ears on or in the water. I have replaced sea water pump,motor water pump,thermostat (140 degrees), temp guage and sender. I have taken the risers off and checked them and they look ok. The riser on one side does run about 30 degrees warmer than the other 130 verses 100 on the other side. The hose coming out of the bottom of the exhaust manifold on one side is about 190 and 160 on the cooler side. Water coming out the transom is about 130 with my infrared gun, yet the boat guage says 200. Im stumped! PLEASE HELP!!! THANKS."