Mercury Outboard Thermostat Got water in your outboards engine oil? the cause could be a failed thermostat. here's how to tell if an outboard thermostat has gone bad. Re: how do you test your thermostat? put a thermostat in the water, it should start to open about 10 degrees below the rated temp and fully open about 10 degrees above. also watch that it recloses about 20 degrees below. the actual reading are in your manual but this will put you in the ball park.
Check Outboard Engine Thermostat Outboard Maintenance Testing a suspected failed outboard engine thermostat.when placed in hot water the thermostat should open fully which is measured by the lift as stated in th. P0128 is an obd ii trouble code indicating that your mercury mariner’s thermostat is stuck in the open position, meaning your engine isn’t getting up to the proper operating temperature. if your mariner has a p0128, it is almost certain that it needs a new thermostat. To test your boat’s thermostat, simply tilt it up while the boat is not in use. if the thermostat doesn’t work, try tilting it up to ensure proper cooling. checking the thermostat for leaks can help you determine if the thermostat is broken or needs to be replaced. How to check your outboard engine thermostat to make sure it works properly so your cooling system is at maximum efficiency.
Check Outboard Engine Thermostat Outboard Maintenance To test your boat’s thermostat, simply tilt it up while the boat is not in use. if the thermostat doesn’t work, try tilting it up to ensure proper cooling. checking the thermostat for leaks can help you determine if the thermostat is broken or needs to be replaced. How to check your outboard engine thermostat to make sure it works properly so your cooling system is at maximum efficiency. In this how to video, mercury pro team member scott glorvigen of wired2fish demonstrates how to inspect and change the thermostat on a mercury 350hp verado outboard model, and the procedure is similar for other mercury fourstroke, verado and pro xs outboards. I have a 2002 50 hp mercury outboard that starts right up but after a few minutes of idling the hi temp alarm goes off. water is coming out of the tell tale at what appears to be normal pressure but it's coming out scalding hot and engine block is too hot to touch. i removed the thermostat and put in boiling water and it seemed to work. I have an earlier year model mercury blackmax 175 hp v6 1989 serial number: ob383305 with an overheating problem. i pulled the thermostats and took them home and ran a stove top hot water test. the temperature rating stamped on the t stats is 143. Get to the bottom of the problem (very likely a thermostat, or both). clean or replace as necessary. note: when testing a thermostat in water, move it to cold water after it opens. it should close rapidly (if it remains open after 10 15 seconds, it is bad).
Check Outboard Engine Thermostat Outboard Maintenance In this how to video, mercury pro team member scott glorvigen of wired2fish demonstrates how to inspect and change the thermostat on a mercury 350hp verado outboard model, and the procedure is similar for other mercury fourstroke, verado and pro xs outboards. I have a 2002 50 hp mercury outboard that starts right up but after a few minutes of idling the hi temp alarm goes off. water is coming out of the tell tale at what appears to be normal pressure but it's coming out scalding hot and engine block is too hot to touch. i removed the thermostat and put in boiling water and it seemed to work. I have an earlier year model mercury blackmax 175 hp v6 1989 serial number: ob383305 with an overheating problem. i pulled the thermostats and took them home and ran a stove top hot water test. the temperature rating stamped on the t stats is 143. Get to the bottom of the problem (very likely a thermostat, or both). clean or replace as necessary. note: when testing a thermostat in water, move it to cold water after it opens. it should close rapidly (if it remains open after 10 15 seconds, it is bad).
Check Outboard Engine Thermostat Outboard Maintenance I have an earlier year model mercury blackmax 175 hp v6 1989 serial number: ob383305 with an overheating problem. i pulled the thermostats and took them home and ran a stove top hot water test. the temperature rating stamped on the t stats is 143. Get to the bottom of the problem (very likely a thermostat, or both). clean or replace as necessary. note: when testing a thermostat in water, move it to cold water after it opens. it should close rapidly (if it remains open after 10 15 seconds, it is bad).
Check Outboard Engine Thermostat Outboard Maintenance