GoodCubanito
Jet Boat Addict
- Messages
- 142
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- 97
- Location
- Lewisville, Texas
- Boat Make
- Yamaha
- Year
- 2016
- Boat Model
- Limited S
- Boat Length
- 24
Mandiime, what sensor is that part for? What is the name of the sensor?
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Chasing a ghost!!!
- Thread starter GoodCubanito
- Start date
Mandiime
Jet Boat Addict
- Messages
- 82
- Reaction score
- 72
- Points
- 92
- Location
- Redding Ca
- Boat Make
- Yamaha
- Year
- 2019
- Boat Model
- Limited S
- Boat Length
- 21
It's called a Thermosensor. Just got my boat back and put back in the water yesterday. Seems the problem has been solved.
David Martin
Jet Boat Junkie
- Messages
- 634
- Reaction score
- 462
- Points
- 147
- Location
- Punta Gorda
- Boat Make
- Yamaha
- Year
- 2013
- Boat Model
- SX
- Boat Length
- 24
200 is way to hot........sounds like a blockage in a water passage. My 1.8 engines run around 135 to 140 in that area of the block/exhaust manifold.
Mandiime
Jet Boat Addict
- Messages
- 82
- Reaction score
- 72
- Points
- 92
- Location
- Redding Ca
- Boat Make
- Yamaha
- Year
- 2019
- Boat Model
- Limited S
- Boat Length
- 21
Isn't 170 - 210 normal for a fresh water engine?
maviles392
Jet Boat Lover
- Messages
- 88
- Reaction score
- 55
- Points
- 67
- Location
- Panama City Florida
- Boat Make
- Yamaha
- Year
- 2017
- Boat Model
- Limited
- Boat Length
- 21
For a car yes, 190 to 210. 220 even for a car is getting over heated. For a boat engine that’s pulling in raw water that’s 60-90 degrees depending on time of year and where you live, 140-170 is probably a normal running temperature
David Martin
Jet Boat Junkie
- Messages
- 634
- Reaction score
- 462
- Points
- 147
- Location
- Punta Gorda
- Boat Make
- Yamaha
- Year
- 2013
- Boat Model
- SX
- Boat Length
- 24
My engines on my I/O Merc's in the past ran 170 stats.....the Yamaha 1.8 are running vary cool on my boat, I can't find a temp higher than 145 with my digital infrared gun.(I have done a test on the gun for accuracy) just below exhaust manifolds(on Block) 135, the exhaust manifolds are 120/125 the water flows up the exhaust manifolds from the jet pump(cool raw water) then flows into block around cyls and exits through the thermostats housing host the dumps above the jet pump in the aft of the hull This is my highest temp 145 the exhaust exit port 140. I temped 12 different areas on both engines and see temps from 120/145. I wrote these down in my service book for future bench marks, to track water jacket temp as debris might start to clog water passages.
I'm going to pull thermostats housing to to make sure my stats are in their(it is a used boat) never can tell what previous owner or dealer has done.
I'm going to pull thermostats housing to to make sure my stats are in their(it is a used boat) never can tell what previous owner or dealer has done.
