What causes fuel to mix with coolant?
Oil and coolant can also end up mixing if your engine overheats and either destroys the gasket or cracks the cylinder head. An accident that cracks the cylinder head or damages the engine block can result in oil and coolant mixing as well.
How does an inboard motor cooling system work?
Most marine inboard engines are fresh water cooled. Much like your car, a captive amount of freshwater (coolant) is continually circulated through a heat exchanger that maintains the engine at a temperature set by the thermostat. The solution is to utilize the relatively cool seawater, described as raw water.
How does a marine diesel engine cooling system work?
Marine engines, as well as automotive engines are, cooled by circulating water through the engine block. The standard raw water system, and the fresh water (commonly known as the closed) cooling system. Raw Water Cooling Systems. Raw water cooling systems draw water from outside the boat (seawater or lake water).
How are jet boat engines cooled?
First, most jet boat engines run too cool for optimum performance. In these systems water is pumped from the jet drive through a gate valve to a tee fitting under the front of the engine. The water is split and directed to the front of the engine where the water is pumped into the exhaust logs on each side.
Why is my boat engine overheating?
Overheating can also be caused by a worn or damaged water pump impeller. Any debris left in the water passages may reduce flow, which leads to persistent overheating. When a new impeller is installed, run the engine or related system as soon as possible to ensure proper operation, as I learned from experience.
How do I add coolant to my boat engine?
Remove the raw water intake hose from the seacock (this is sometimes difficult, as hose clamps and hoses may be mechanically frozen in place) and insert the end into the antifreeze in the bucket. Start the engine and run at idle until antifreeze discharges from the exhaust outlet for 30 seconds or more.
How do you Dewinterize a boat?
Dewinterizing Your Boat: 12 Steps for Your Spring Boat Inspection
- Remove the Boat Cover and Inspect for Critter Hibernation.
- Clean All Canvas, Vinyl and Carpeting.
- Check the Engine & Propeller.
- Check Cooling System & Replace Antifreeze.
- Replace Battery.
- Check for Damage.
- Polish and Wax.
- Attach Electronics.
https://www.youtube.com/watch?v=goUc_IdkfLA