" I have a Mercury Saltwater 1
" I have a Mercury Saltwater 150 OB that I wish to install a temperature gauge to check operating temperatures. Problem is, I don't know what I'm supposed to be looking for as far as maximum temp. to determine if I have a faulty high temp. sensor. Had a problem earlier with the sensor alarm sounding randomly, but it suddenly stopped. Now its back again. Have checked head temp. with a laser temp. checker and it reads about 165 degrees. Pee hole water temp. at outlet is 150 degrees. What temp. sets off the alarm(?) and what is maximum temp. for this engine? 2000 year model s/n OTO66715. "
" I have a Mercury Saltwater 150 OB that I wish to install a temperature gauge to check operating temperatures. Problem is, I don't know what I'm supposed to be looking for as far as maximum temp. to determine if I have a faulty high temp. sensor. Had a problem earlier with the sensor alarm sounding randomly, but it suddenly stopped. Now its back again. Have checked head temp. with a laser temp. checker and it reads about 165 degrees. Pee hole water temp. at outlet is 150 degrees. What temp. sets off the alarm(?) and what is maximum temp. for this engine? 2000 year model s/n OTO66715. "