Funny how I took my previously fine running boat in for yearly service. Guy tells me I need plugs and my fuel pressure was 11 lbs low. So I changed plugs and fuel filter and he said he never seen on have fuel pressure just a little low it's usually way low and said since it was running fine don't worry about it. Took it out and it idles like crap and cuts off at slow trolling.however at high speeds it runs very well. What do you guys think thanks in advance.