jessie90morin
25.05.2021 6:34:59
In this way, is fogging a boat motor necessary? here
See full version: Should you fog a 4 stroke outboard
In this way, is fogging a boat motor necessary? here
What happens if you don't winterize your boat? [links]
Before the engine runs out of fuel, spray fogging oil into the carburetor(s). Fogging oil is an anticorrosive that will protect the internal surfaces of the carburetor and the cylinders. Typically the engine will run rough just before it runs out of fuel. [links]
Keeping this in consideration, do you have to winterize a 4 stroke outboard motor?
If your engine has a fogging oil fitting, you do not need to remove the air box cover. Four-stroke outboards have a plastic air intake that you spray the fogging oil into. Get the kind with a maintenance valve fitting if you have a Johnson or Evinrude outboard, 1990 and newer, with a maintenance valve.
While I know that those posting here will understand the distinction, I think there's a point that needs to be made about leaving outboards in the water in freezing temperatures. I bring this up for the benefit of people who may be reading the forum, but have no experience in such conditions. [links]
I have owned outboards for nearly 40 years. Fogging oil has not been available that long, so obviously I did not use it. I also never had an issue with rust on the internals of a 2 cycle outboard. I have owned outboards from 5HP to 150HP(24::1, and 50::1 mix), and never used any fogging oil, and never had any issue. My apologies to Chinewalker, who's opinions I respect. I seem to have questioned the cause of the watermarks and chatter he is seeing on the journals.
Yep - you can certainly use your outboard in the winter. assuming you can push the ice outta the way. more
Re: will not fogging your outboard really hurt it? here
Re: will not fogging your outboard really hurt it?
Keep moist air from getting inside your engine and tanks. Seal air inlets, crankcase and transmission breathers, exhaust outlets, and tank vents. Fabricate caps from plastic containers and tape them in place with plastic tape to create an airtight seal. Try to do this on a dry day so you do not seal in moist air. List all openings sealed this way so you will remember to open them in the spring. As a rule, you should not completely seal a fuel tank vent, so if you cap it to retard moisture transfer, puncture the cap to avoid pressure build-up in the tank.
When the temperature falls below freezing, if there is water inside your engine or gear case, the result can be a cracked block or housing and a repair bill that runs into the thousands. It is easy enough to prevent this unhappy circumstance by putting your boat's engine to bed properly at the end of the boating season.
For inboards, a gallon or two of non-toxic propylene glycol antifreeze
Clean all pivots and visible gears and protect them for the winter with oil or grease, as specified in your owner's manual.
Disconnect the flush attachment or remove the motor from the flush tank. With the motor upright, let all water drain out of the pick-up. Open drain plugs (if any--see your owner's manual) to empty the powerhead and intermediate housing. Crank the motor a couple of times by hand or "bump" it with the starter to empty the water pump. If the motor will be exposed to free.
Extract control cables from their housings and coat them with grease. If you cannot remove them, tape an oil-filled bag tightly around the high end of the housing; the oil will work its way down the cable. Lubricate linkages and pivots.
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