Fogging engine for winter

Bronx68

Seaman Apprentice
Joined
May 16, 2007
Messages
47
I just bought a 2005 90 Hp Johnson. I've been told two different approaches after adding stabilizer and would like to know which approach is correct.
Approach 1. Shut off the gas to run gas out. Then fog the engine through carbs and run until engine stalls. Then pull out plugs and spray fogging oil in each cylinder. I'm concerned could damage cylinders by running out of gas.
Approach 2. Do not shut off the gas line. Connect fogging spray can hose to nozzle on solenoid turn lever. Fog until heavy smoke and engine stalls.
Does using approach 2 actually shut off gas by using solenoid lever and fogging hose? Which approach is correct? I'm told if you leave any gas in the carburators you will have problems in the spring. How would I drain the gas from carbs with approach2?
Also the gas in the tank is from last year (still over 12 gallons). What precautions can I take with old gas??
 

jimdd810

Chief Petty Officer
Joined
Mar 18, 2006
Messages
532
Re: Fogging engine for winter

I use approach 2 except I fog the motor through the carbs. I use marine grade stabil and do not drain the carbs. The 12 gallons of fuel you have in the tank if you can use it in your car or truck or snowblower or what have you.
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: Fogging engine for winter

As has been suggested on your other posts;
Do not run a multi-carb engine out of fuel, the carbs will not run out at the same time, no fuel = no oil.
Install the fuel stabilizer of your choice, run engine long enough to get the stabilizer into the carbs.
Fog through the solenoid and shut engine off.
If you have confidence in your stabilizer you are done.
If want to be 100% sure you woun't have any carb problems from leaving fuel in the carbs drain them using the plugs on the lower side of the carbs.
 
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