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CB750 / New owner with a ignition problem
« on: March 20, 2010, 06:22:10 PM »
I just picked up a 74 CB750. I think it has an issue with the power from the alternator to the ignition. The battery ran down and the bike wouldn't kick start. I charged the battery for a bit and it ran for a few minutes until the battery ran back down again. I am guessing that the bike should run with a dead battery just on it's own power from the alternator but maybe these beasts are different. The headlight does get brighter when the throttle is turned so that usually means the alternator is working. So does anyone know where I should start to trouble shoot this?
A second smaller issue is that there is a small oil leak and it looks like it's coming from a notch in the top of the motor just behind the carbs. It feels like there is a hole back there that maybe is supposed to have a breather that goes to the airbox or something? The airbox is gone of course because it has cone filters. I can post a picture of the area I am talking about if that helps.
Thanks in advance for any help.
A second smaller issue is that there is a small oil leak and it looks like it's coming from a notch in the top of the motor just behind the carbs. It feels like there is a hole back there that maybe is supposed to have a breather that goes to the airbox or something? The airbox is gone of course because it has cone filters. I can post a picture of the area I am talking about if that helps.
Thanks in advance for any help.