Hey everyone. I am new to this site as well as boating so please forgive my ignorance on all of this.
I bought a 17 foot renken boat. It has a 1963 75 horse Johnson electramatic. We had the boat running pretty well, but when it came to show time it wouldn't stay running. When I started in the water for the first time...it would run...but wide open. That was with the start lever down...which after I looked closely...it slightly advances or retards the timing...(i think). Then it just died. I do have spark. It will also run under ether. And I pulled the hose going to the back of the two carbs and I had fuel up to that point. But, I pull the plugs and none of them are wet, or smell like fuel or anything. Im also getting fuel out of the exhaust from what i can tell. I don't know if it's not getting constant pressure? The fuel line going to the carbs is attached to a pump. It's a fuel in, fuel out deal with a glass bowl and filter. I cleaned that. It also has another hose that I'm going to assume is vacuum. That operates a little diaphragm / pump thing. There are two long adjustment screws in front of the carbs. I pulled them out and they are 2.5 to 3 inches long. From what i can gather...they seem like an air fuel mixture. From what im told they adjust it rich and lean. I tried tweaking those as well. So from what I can tell I'm not getting fuel from the carbs, to the cylinders. Any help would be greatly appreciated.