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
Replace your t/stat and check out the water pump.<br />The motor needs to run at the correct temp,that's one sure way to get fouled plugs.<br />keep posting
