It's actually my Boat Motor. It's a Mercruiser using a Chevrolet, 250 Cubic Inch, straight six. When cruising at a constant speed with the throttle set anywhere from 2000 to 3800 RPM, after several minutes, it will backfire thru the Carb.
have the same problem?
Saturday, October 6th, 2012 AT 3:46 PM