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Join Date: Nov 2007
Location: Chandler, Arizona
Coolant can get into the combustion chamber from a blown head gasket, or a crack in the head or cylinder. There are coolant passageways between the cylinder and head, and from pictures I've seen, they come very close to the edges of the gasket. Turn the engine so one of the cylinders is at TDC on the compression stroke, then pressurize the cylinder, remove the coolant filler cap, and see if you get bubbles in the cooling system.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike