2004 RXP engine runs rough.

[babyburke]

I got a 2004 RXP 1500 S/C with 58 hours. I changed the oil last week and got it ready for the first ride of the season. When I was done with it last year, it was running fine, I drained all the fuel, fogged it and put it away. After i changed the oil last week, i started it on the garden hose and it ran fine. I fueled it up yesterday with surpreme gas and when i put it in the water yesterday afternoon, it started right up and ran fine for a minute. I got half way out across the river when the engine began to miss and stalled. I got towed back to shore and pulled the plugs out. They were soaked so i replaced them with an old set that i had in my tool kit. The engine started right up but would miss. I thought the engine might of been loaded up with fuel so i took it out for a ride. The engine ran this time but would caugh, back fire, and wouldn't rev up past 5000rpm. I then loaded it and headed for home. I checked the plugs and they looked good. I started the engine and pulled the coils off of the spark plugs one at a time and could hear the cylinger cut out when it was removed. I'm gonna try a new set of plugs tonight. I read somewhere that too much oil in the engine can cause them to act weird. I am up to the top of the full mark so i'm gonna drain a little out tonight as well.
Any other insight would be muchly appreshieated!!!!!!
Thank you

 

[Michael211_2000]

Oil level should be at the middle of the bend in the dip stick... it's dumb, but that's where BRP says the full oil level should be at.

Also you could have some water in the fuel tank, you should not leave the tank empty over the winter it should be full of treated fuel (Stabil or SeaFoam)! Empty it had air inside and water droplets can condense from that air. Go ahead and get a can of Seafoam from your local O'Reilly's auto parts and treat the fuel you now have in the tank.

ps. It is a good idea to keep the watercraft's tank full of treated fuel all the time, with Stabil or Marine Stabil or Seafoam whichever poisen you prefer. They'll keep moisture out of the fuel and prevent the fuel from going bad, and keep the engine's fuel injectors clean.

- Michael

 

[babyburke]

Thanks.
I changed the plugs and drained out some oil. I had it running on the trailer for 5 mins or so the other night. Engine seemed to run fine. No misses or back fires. I gave it 2 or 3 good shots of fuel and she turned 8000+ rpm's pretty easy. I've yet to hit the water again with it tho but i can only hope its cured.

 

[Michael211_2000]

Cool beans! I do recommend putting a fuel treatment like SeaFoam in the tank though before you take it to the water again. It certainly won't hurt, and may well help!

Have fun, be safe!

- Michael