intermittent spark

Hey guys, My seadoo is sparking intermittently. The plugs are new and when it does decide to spark, it's a nice powerful bright spark. I've checked the water proof wiring harness box to see if anything is loose or damaged and everything looks brand new in there. The first time I got it to...

I am new to the forum. It was great to find this Mercury forum. I have an engine problem or problems with my 2003 Islandia 240 EFI. I haven't had the boat long, I was cruising along at 2/3s throttle when forward motion was reduced as if I had throttled back, I hadn't, and the engine was...

Help! Tried everything... Using new gas, filed down spark connectors, pit enzyme inner fuel... Still cuts out at low throttle????? Everything is clean!?