I have a mariner 15 hp 2 stroke tiller and when i plug the fuel line up and prime it it does not run if i disconnect it it fires right up a runs till the lines are dry i have tried reconecting but it runs for 5 seconds and dies the carb will also squirt fuel out side IDK what else to do diafram and valve look good but i am no expert please help here is a video to show whats going on
Mariner 15 hp 2 stroke - YouTube
Mariner 15 hp 2 stroke - YouTube