I have a 2000 Four Winns 268 vista with a DPS drive. Water is leaking down by the Y pipe at a good rate. It is very hard to see with a flashlight and mirror due to space. I just had a new engine and lower unit installed on it. Mine is on a lift and when lowered down in the water my bilge pump kicks on about every 15 minutes to pump water out with or without the engine running. Any suggestions how to fix without pulling engine. I do not have a trailer and the company that did the work is now closed. Any help would be appreciated.