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General Discussion / Re: Creamy oil in airbox
« Last post by Off @ 90 on Today at 01:57:48 AM »The V7 Mk2 uses the top frame tube as a breather box and a lot of mayo can build up in it especially in cold weather . I would disconnect the rocker cover tubes , the tube to the airbox and the drain back to the sump . Blow compressed air through the open tubes and frame tube . Ensure the lines are disconnected to engine and sump as you do not want all the rusty mayo crap being blown back into the engine.
To get mayo in the airbox means that you may have a blockage in the sump return drain line . This has a non return valve in it make sure it's functioning correctly and the line is clear.
I installed an oil/air separator in the sump return line just above the starter. In winter I probably drain a table spoon of water out of it a week . Doing 40 km commute air cooled engines just don't get warm enough to boil it off in winter conditions. Since fitting separator seems to have stopped the mayo build up .Hope this helps
To get mayo in the airbox means that you may have a blockage in the sump return drain line . This has a non return valve in it make sure it's functioning correctly and the line is clear.
I installed an oil/air separator in the sump return line just above the starter. In winter I probably drain a table spoon of water out of it a week . Doing 40 km commute air cooled engines just don't get warm enough to boil it off in winter conditions. Since fitting separator seems to have stopped the mayo build up .Hope this helps
