John Haggerty
Contributing Member
1989, 70hp Johnson. It's been running good the last couple of months. I run it about every other day for about one hour of run time. About one week ago I was up on plane running the sweet spot of 3750 rpm. I normally run it there as it's seems to like that best. It just suddenly died. I don't think I hit anything as I was running familiar water. It re-started fine and ran fine for the next week. I have two batteries set-up with a selector switch. I only use it in the starting battery position. In addition there is another switch which if I remember allows the trolling motor battery to charge when the starting battery is full. I don't use that switch. A couple days ago I accidentally hit that switch and the motor ran very rough and died. I put the switch back in it's regular position and the motor started and ran fine. Being curious I switched it again and again motor rough and died. I put it with back vowing never to switch it again. Motor then running good. A day later it ran fine for about half an hour. It ran rough and died. I can get it to start and idle fine. If I put a load on it it dies. Makes me think it's a fuel problem. I changed all fuel hoses/lines and removed and cleaned the carbs about 8 years ago. Since then, nothing but high octane REC fuel. I have a water separator/filter and a second inline filter in the system. Any thoughts, thanks!