Anonymous-0
Well-known Member
Hey guys, Ive recently acquired a problem on my 45 M. When you let it sit and idle, the exhaust will change pitch from a low hum to a higher note and will just keep going back and forth. Also it will stumble for just a second and youll get a small puff of blue smoke. It will also puff a random little cloud of blue smoke while moving, but when you put it under a load it clears right up. I checked all the hardware holding the exhaust manifold to the head, and the carb to the manifold. I found a few manifold nuts that were a little loose, but the problem persists. I also tried using ether around the carb and intake gaskets to check for an air leak with no success. any other ideas?
