Recent content by vasi0011

Yes, when I opened up the speedo housing I saw this...

Ha ha... I didn't know I was answering my own question. :P LOL

The ignition switch probably isn't your problem. Probably a short in your speedo dash lights. "P" position allows you to take the key out of the ignition, and have the tail light still lit. It's if you have to leave your bike by the side of the road at night, and don't have to leave the key...

Had the same problem with my 1978 Hondamatic 750a, and found that the "tail light" fuse also runs the lights inside the speedo. Look for shorts or unconnected wires inside the speedo housing that run the dash lights.

I'm tracking down an electrical problem in my 1978 Honda CB750a Hondamatic. The tail light fuse (7A) blows immediately when the ignition switch is turned on. I've determined that there is no short in the tail light, and it's working perfectly if it is connected to a 12V source. The tail light...

I'm tracking down an electrical problem in my 1978 Honda CB750a Hondamatic. The tail light fuse (7A) blows immediately when the ignition switch is turned on. I've determined that there is no short in the tail light, and it's working perfectly if it is connected to a 12V source. The tail light...

I didn't mention that in really cold weather it runs terrible, even after fully warming up. It cannot accelerate without sputtering, and stalls at times when trying to accelerate from a full start.

True. Cold weather may create gaps on intakes which would mean vacuum leaks. Good thought. Have to check that.

I've been trying to chase down a problem with my 1978 Hondamatic 750A running very poorly in cold weather, in the 40's or 50's F degrees. It runs great in the summer, but predictably runs terrible when it cools off in the fall. I completely gone through the carbs, with no change in the...