Waverunner won't run at high rpms, need help asap
Have an old 95 Yamaha Wave Venture WV700t, has run perfectly for two years since I bought it but while running the other day wide open and it just bogged down from full speed and was only able to limp back in. I checked for anything clogging intake and it was fine. Changed spark plugs and fuel filter. I always run stabil gas and use sea foam regularly too. It runs fine out of water but when we tried it under load in the water the same thing happened. I checked the rectifier because battery wasn't holding charge but it read 13-14 v while running and it ended up that was just a bad battery which I replaced. I then rebuilt the carbs though hadn't done it before and felt like I did it correctly. I did not change any of the idle or jet settings. The only concern I had was the spring in the carb, the kit had 4 and I'm not sure I used the right one (all looked the same and got the original mixed up with them). Could an incorrect "pop off pressure" from the wrong spring cause the issue I'm still having? It is improved after the rebuild and was able to slowly get on plane but would bog down almost immediately. It does seem to be running more roughly since the problem started and makes me wonder if this is a result of insufficent fuel causing the roughness or could it all be the result of a bad bearing in the drive shaft? Could it also be an impeller clearance issue? That seems to be very tight after removing the grate and just looking around the impeller. Please help with any suggestions! My son and my addictions to getting away to the lake are jonesing badly now and summer is dwindling away!! Taking to a mechanic is not option as we need to try to fix it ourselves at a reasonable cost.