I have a 1989 Carver Marinner with twin 350ci. 260 horse. both engines will not come up to operating temp 140. I have replaced both thermostats, the engines still run cool. when measured with a laser temp gauge they read 105.<br />The thermostat housing remaine cold at all times.<br />the thermostats are in correctly.Any ideas?<br /><br /> thank's malvo
