the 3 gal oil tank has some crazy pressure. probably around 50lbs. i cant believe it didnt blow one of the caps off. it was basically swelled so much it was round shaped. i noticed the boat wasn't running right. usually itll run around 55 mph and it wasnt even hitting 30 mph. it was mis firing a little. i went to look at noticed the oil tank was pressurized way too much. after doing some trouble shooting i also noticed the oil tank had gas in it... what could this be? ive had the boat for 10 years and have not had a single problem with it until a few weeks ago when i put oil in the tank and didn't screw the cap on tight enough and 5 mins later i noticed it and it was fine. after doing some research i found that there is a check valve that could be clogged or malfunctioning to cayuse the pressure but would that also allow gas to back feed into the oil container? thanks for your time.