Quick Answer: Do you need to flush boat engine?

What happens if I don’t flush my outboard motor?

What we find is if you do not flush your motor as per the manufacturer’s specifications you will over time get a build-up of residual salt, and that salt will crystallize in the water flow galleries and being pressed against the alloy structure of the head they will slowly corrode and pit.

Should you flush your outboard motor after every use?

A full flushing of the motors must be done after every use, and it’s recommended every six weeks if it’s been sitting in storage. It’s important to run the motors long enough for the thermostat to open, allowing the fresh water to flush the salt from the entire powerhead.

Do you need to flush inboard motors?

While not flushing the head is merely inconsiderate, not flushing a raw water–cooled engine is irresponsible. Salt or brackish water can cause corrosion damage, and freshwater marine organisms can cause clogs. … Automobiles use air through a radiator to cool their engine, but boats use water from their environment.

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Do I need to flush my outboard with antifreeze?

To prevent freeze damage, prior to winter storage, many owners simply drain the cooling water out of their outboards. However, while it might seem like “overkill”, we recommend flushing your motor with antifreeze. This will prevent residual water from turning into ice and causing damage during a hard freeze.

How often should you flush your boat engine?

Most outboard manufacturers recommend a freshwater flush after every use in saltwater to clear the cooling passages of salt residue and scale that can accumulate and impede the flow of vital cooling water through the engine.

What happens if you start a boat motor out of water?

Starting a boat without water is not recommended. Most outboard and inboard engines use impellers (rubber pumps) to run water to the boat’s cooling system. Without water to cool off and lubricate, the impeller will heat up super fast and possibly damage.

How long can you run a boat motor on muffs?

For larger engines, use the flush port or a set of flushing muffs. Water pressure should be set to one-half or more to ensure adequate flow to the intakes. The engine should be run for five to 10 minutes.

How often should I start my outboard?

A few hours every week keeps the motor in better shape than using it two or three full days every month. The more often it gets used, the better it will run, just like any vehicle. If it’s left sitting idle at the marina or in a garage for the majority of the time, parts tend to go bad faster.

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How long should you flush an inboard motor?

How long should a flush take? The short answer is: at least 5 minutes, especially for dry-stored boats.

Do outboards self drain?

All outboards have a self-draining cooling system. There is no reason to start the motor with the notion that you are going to purge the last drops from the water pump housing.

Should you winterize an outboard boat motor?

Winterizing is Really Important

Correctly preparing your outboard motor for the off-season will help insure that it’s ready to go next spring. In cold climates, freezing weather can cause costly damage to an engine that isn’t winterized properly.

Do outboard motors need to be winterized?

Like inboards and sterndrives, outboard engines are also subject to potential damage from freezing and from being laid up in disuse for months at a time. So outboards demand winterizing too.