I HAVE A 1988 COBIA MONTECARLO WITH A 1989 MARINER 150 HP OUTBOARD. THE ENGINE WORKS FINE, REALLY SMOOTH, BUT WHEN I GET THE REVS UP TO 3000 RPM, THE TEMPERATURE STARTS GOING UP ALMOST AS FAST AS THE REVS! AND I HAVE TO SLOW DOWN. I HAVE CHANGED THE IMPELLER PUMP, THERMOSTATS, TEMP...
