I recently purchased a 98 air nautique and it will start and run for around 5 seconds then stall then just sputters when trying to restart recently it has been starting back up and running for about 5 seconds. What i know. the gas is good, has 39psi of fuel pressure and does not drop when it stalls, it has spark when cranking and trying to restart, kill switch is good.going to hook up a oscilloscope to the injectors soon to see if they are shutting off for some reason any help would be much appreciated