Hello all, I have searched the forum, but haven't found any issues like mine.
History: My 1992 K75 sat for about three years because I couldn't get it started. This spring, I invested several weekends and several hundred dollars in parts to get it fixed. I replaced (in this order) the fuel filter, fuel pump, all hoses in the tank, crank case breather hose, external fuel lines, spark plugs, spark plug wires, fuel rail, and fuel injectors. Turns out the biggest issue was the fuel pump was inoperative, the spark plug wires were bad, and the fuel rail/injectors were full of rust and gunk.
During the fixing process, I would crank the bike to see if it would start. I didn't know that the injectors were evidently stuck open, allowing fuel to drain past the rings and into the crankcase, diluting the oil with fuel. When it finally did start after changing the fuel rail and injectors, it would run great until it warmed up, then it would start to sputter and die. It wouldn't start again until it cooled down. After some brain racking, I couldn't figure it out, so while continuing to ponder the situation, I decided to change the oil. To my surprise, then I pulled the drain plug, oil (and fuel) the consistency of water poured out, and continued pouring out well past four quarts. I would estimate that there were eight quarts of fluid in the crankcase. I then develop a theory that as the fluid heated up, it would expand, choking the engine and causing it to die. After changing the filter and adding the prescribed amount of oil, the bike started and ran beautifully, without ever dying.
Problem: However, a new problem surfaced. I know the cause, but don't know how to fix it. The engine leaks very badly. I believe that the oil/fuel mix that sat in the crankcase has compromised the gaskets and seals of the engine. Question, is this reasonable and if so, are there specific gaskets/seals that I can change without removing the engine, or is an engine pull in my future? What do you suggest changing?
