1990 mach 1 .....350 magnum mercruiser..........when i start my boat,after about 5 minutes the guage jumps to around 220 and doesn't move..up or down....what could this be or what should i check first
Ayuh,... Welcome Aboard,... Check the Impeller...
Maybe you should start replacing the word "check" with "change"?
Would ya really want to split a drive and not just slap a new impeller in? especially if there's any question on it's relation to an overheat problem?
Or, am I just too wasteful?![]()