Oli

Hi, I just bought a Polaris virage 750 and have had a great few run outs however the last couple of times it's been filling up with water rapidly which i've only noticed when i've got it back on the trailer and taken out the bungs ! Yesterday, after a good 45 mins running and 30 mins moored on a buoy, I looked in the engine bay and it was 1/3rd full of water . . I started pumping it out and then started the engine which worked ok for a few seconds but I haven't been able to start it again since ! Has anyone else had this problem and can anyone help me figure out what to do about it please ? Thanks