How do I know if my outboard thermostat is bad?
Symptoms of a failed thermostat (open position)
- Engine slow to warm up.
- Engine not reaching its correct operating temperature.
- Poor cold weather performance.
- Water flowing from the exhaust pipe at idle.
Can you run an outboard motor without a thermostat?
Yes, you can temporarily run your outboard without the thermostat and not harm the engine. No, you can not remove the thermostat and continue running the engine for long periods of time without causing harm to the engine.
How do I know if my thermostat is stuck closed?
The coolant should warm to the right temperature and begin to flow after 10 to 20 minutes. If it does not start to flow, but the temperature gauge on your dashboard rises, your thermostat is stuck closed. If your coolant flows normally, there may be another cause of your overheating engine.
Should I change thermostat when changing water pump?
its a good idea to replace the thermostat whenever replacing a water pump. The thermostat may have suffered some damage during the overheating that occurred before the water pump failed.
How do you know if your thermostat is sticking?
Checking For the Signs of a Bad Thermostat Look to see if the coolant is swirling/flowing immediately — that means the thermostat’s stuck open. If the coolant doesn’t flow after 10 minutes or so and continues to be stagnant after the temperature gauge indicates it’s hot, the thermostat’s likely stuck closed.
Does a boat motor need a thermostat?
One of the least appreciated components of an outboard motor is the lowly thermostat. A thermostat regulates the temperature of the water for engine cooling and keeps pressure in the cooling system to facilitate heat transfer from the heads and the cylinder walls.
Do Mercury outboards have thermostats?
Sierra 18-3549 Thermostat for Mercury Sierra replacement thermostat for Mercury Marine engines. Temperature Rating: 120°F Use with: 18-3569 Thermostat Kit 18-43052 Thermostat Kit Interchangeable…
Where can I find a Mercury Mariner thermostat kit?
Find thermostat kits for your Mercury Mariner outboard using the application chart from the Mercury Quicksilver catalog. Need other parts? If you need parts not listed in the application guide, please see:
What should the temperature be on a Johnson outboard?
Temperature Rating: 140 degrees Interchangeable with: GLM 13170 Johnson/Evinrude Outboard 394409 434137 Sierra 18-3669 Thermostat Kit for Johnson and Evinrude Outboards Sierra replacement engine parts are designed to meet OEM Specifications.
What is the purpose of a boat thermostat?
The boat thermostat is an often underappreciated component of every craft. This mechanism regulates engine temperature and ensures optimal performance. Boat engines run at max performance which can generate a lot of heat.
What kind of thermostat do I need for an Evinrude engine?
For Use on Johnson/Evinrude (OMC/BRP) Outboard Engines: V-4 Crossflow Interchangeable with: GLM 46170 Johnson/Evinrude Outboard 318395 Sierra 18-3557 Thermostat Sierra replacement 143° thermostat for Chrysler/Force/US Marine, Johnson/Evinrude Outboards, Mercrusier Stern Drives, and Volvo Penta engines.