My grandfather and I went out on the river yesterday with his 14ft johnboat. He has a Johnson outboard motor that is a 15 hp. the model number is J15RSUA.
Ok. so when we primed the fuel up from the external tank we started the motor with the choke full. It ran, bogged down and cut off. We tried various attempts to get the motor to run and finally were able to constantly pump the primer and the engine would stay on....but not long. I'm trying to figure out if there is a leak somewhere in the lines or if the fuel pump isn't working properly. It may be a carbuerator issue but im not sure. If anyone can help that would be awesome.