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So, I finally got around to working on my EX this weekend. I had to adjust the mixture screws due to a replaced air filter, which worked great - runs better than ever.
While I had things apart, I was also going to check the O-rings on the coolant tubes that extend into the head (I've had some coolant leaking issues). BUT... after draining the existing coolant, I somehow got ahead of myself and refilled the coolant. :-[ It was too nice of a day to drain all over again, so I'm going to leave this to another weekend.
My concern now is that the old coolant was very dark - almost black, so I'm suspecting oil? Does anyone know if this is possible due to those O-rings, or do I have a bigger problem on my hands?
While I had things apart, I was also going to check the O-rings on the coolant tubes that extend into the head (I've had some coolant leaking issues). BUT... after draining the existing coolant, I somehow got ahead of myself and refilled the coolant. :-[ It was too nice of a day to drain all over again, so I'm going to leave this to another weekend.
My concern now is that the old coolant was very dark - almost black, so I'm suspecting oil? Does anyone know if this is possible due to those O-rings, or do I have a bigger problem on my hands?