The raw water cooling channels on my Volvo MD7A have apparently
become blocked. Raw water cooled, no exchanger. The temp gage won't
register heat. I changed the thermostat and then the sensor . . . and
then discovered the block is getting warm but the exhaust water at the
stern is cold. I am hoping the blockage, rust, can be cleared by
removing the cold water unit the thermostat is mounted on but . ..
Have others had this problem? The books say there should be a zinc on
the engine but I can't find one, and the manual doesn't mention it.
Does someone know where it is? Thanks
Craig Tern #1519
become blocked. Raw water cooled, no exchanger. The temp gage won't
register heat. I changed the thermostat and then the sensor . . . and
then discovered the block is getting warm but the exhaust water at the
stern is cold. I am hoping the blockage, rust, can be cleared by
removing the cold water unit the thermostat is mounted on but . ..
Have others had this problem? The books say there should be a zinc on
the engine but I can't find one, and the manual doesn't mention it.
Does someone know where it is? Thanks
Craig Tern #1519