I found my serial # on my 1989 Mariner 150, called Mercury Marine and got lots of info on my motor. It was manuafactured in 1989 and it was made by Merc. So how close is it to a 1989 Mercury engine.<br /><br />Thanks , Rick
Mariner 150 V6. Temp fluctuates between 160 and 170 at full rpm. Man I bought the boat from said he removed the thermostat and said thats the reason for weak pee. Is there a problem with this or can I leave it as is.<br /><br />Thanks Rick
I have a mariner 19899I think) 2.5L 150 Mariner. This number appears on the swivel, Is it the engine # and can I find out the year of manafacture.Its gray with A gray sticker(mariner in white letters and 2.5 in red letters) with a thin red line on top and a thin(but thicker than on top) red line...
1989 Mariner 150 2.5l v6 cranks a little hard sometimes(Im told this is common)Runs great at lower speeds. But with rpm @ 5500 speed is about 54mph. And engine sounds(about 5 mins apart) like its missing or fuel is lacking pressure to keep engine steady at rpm. Fuel filter is new, water...
