Hi ThereI bought a 9.5 1972 Johnson seahorse out board a few weeks agoit started and ran quite well but needed some small work done like a new water pump and such.I did some regular maintainance and saw that it had a crankcase leak so i pulled the crack case off and sealed it up with the proper gasket sealant. now i have the motor back together and it will not run. it starts for 3-5 seconds then dies. the crankcase still has a small leak from what i can see. I am having troubles torqueing down the crankcase and sealing it up with out tightening it up so tight that you can not turn it over.I don't think it is the fuel pump but am not sure.I can not find a new fuel pump but have lots of spare parts but don't know how they go togetherPlease helpJon
What happens if you continue to pump the primer bulb after starting, Jon?Sounds like she is running out of fuel. That could be the fuel pump, air leak in the fuel supply lines or restriction in the fuel lines.It could also be your starting technique. Do you keep the choke closed or partially closed while she gets started?