"I have a '72 Johnson 25 h
"I have a '72 Johnson 25 hp that will cough or slghtly backfire at the rate or about once every minute at all times, at all speeds, even after it warms up. The low speed jet seems to function normally, letting me overly lean and overly richen the mix, yet this will not fix the problem that I would normally associate with a lean idle mix. also I am finding no air leaks around the block. I am using the same fuel, tank, and line with other motors with no problem. Otherwise the motor runs great. What's up?"
"I have a '72 Johnson 25 hp that will cough or slghtly backfire at the rate or about once every minute at all times, at all speeds, even after it warms up. The low speed jet seems to function normally, letting me overly lean and overly richen the mix, yet this will not fix the problem that I would normally associate with a lean idle mix. also I am finding no air leaks around the block. I am using the same fuel, tank, and line with other motors with no problem. Otherwise the motor runs great. What's up?"