10-09-09, 05:02 PM
Hi all, I have a 2000 sea doo speedster i just bought last month. The boat had not been used for about a year and a half when I bought it. It has the 240 merc EFI engine. When I got the boat it would not run for me( it ran fine in the sellers driveway on a hose but under load in the lake it was a no go) when i turned the key it would start and rev up to 1100rpm and then back down and quit. I did this several times and then i figured out I could stick it into gear and throttle it up really fast and the boat would stay running under full throttle but it would only rev up to 3500 rpm. After changing plugs and checking it over and charging the battery it still continued to do the same thing. I drove it around in this "limp mode" for about 10 minutes trying to listen for clues from the motor. After about ten minutes the boat just took off like a scared cat and almost threw us from the boat. It worked great for about 2 weeks and then did the same thing again. (Would not work then it would work for a few days then not at all again and so on). I am so fed up I want to pull out my hair. PLEASE HELP ME. The things I have checked and done are as follows: new plugs, compression check O.K., computer scan with no codes present, fuel pressure check O.K., new fuel and filter, etc. Now I am stuck with an intermittant electrical problem. Where should I go from here? Anyone else have similar problems?