Hello all... I am new to this forum but after doing extensive research I think I came to the right place. My dad has a 89 omc cobra 3.0 outdrive. After putting in a new one he has the same problem. After 20 to 30 minutes on the water the out drive begins to make a tick tick noise. He says after this that the engine will shut off. After about a half hour he says the host will start up ride like normal for 30 min then again make the noise. Any suggestions as what this could be? He had a old out drive hat did it and now another outdrive is causing the same issue? He really appreciates anybody that could help as he lives in Germany and I am relating this message to you guys.