Ok i will start at day 1 so i dont leave anything out.
My dad bought this 1999 19' Sailfish with a 150 Yamaha v6 2 Stroke awhile back maybe in 2002 or so. He didnt use it very much it sat more than anything, it was to small to go out in the atlantic most of the time. His wife passed a few years later and it again sat for a few more years until he tried to sell it. He found no buyers for what he wanted for it so he pretty much gave it to me and my brother. We took it out a few times with no problems at all then he took it out with a friend in the bay and it developed a rattle in the top end of the engine. It only rattles when its above idle, it has plenty of power so i have ruled out a piston or rod. My guess would be a crank shaft bearing or something in the stator causing the rattle i have not sat there and listened to it because if it is a major internal problem i dont want to cause anymore problems. it was shut off as soon as it started rattling i have confirmed he did put the right amount of oil in it it ran fine for about an hour then it started showing its *** he did change the brand of oil he put in it but it was approved for yamaha engines.
I just would like a list of things to look for so when i start to tear into it i know where to look and dont overlook anything. We are mechanically inclined so we can figure it out im sure.
My dad bought this 1999 19' Sailfish with a 150 Yamaha v6 2 Stroke awhile back maybe in 2002 or so. He didnt use it very much it sat more than anything, it was to small to go out in the atlantic most of the time. His wife passed a few years later and it again sat for a few more years until he tried to sell it. He found no buyers for what he wanted for it so he pretty much gave it to me and my brother. We took it out a few times with no problems at all then he took it out with a friend in the bay and it developed a rattle in the top end of the engine. It only rattles when its above idle, it has plenty of power so i have ruled out a piston or rod. My guess would be a crank shaft bearing or something in the stator causing the rattle i have not sat there and listened to it because if it is a major internal problem i dont want to cause anymore problems. it was shut off as soon as it started rattling i have confirmed he did put the right amount of oil in it it ran fine for about an hour then it started showing its *** he did change the brand of oil he put in it but it was approved for yamaha engines.
I just would like a list of things to look for so when i start to tear into it i know where to look and dont overlook anything. We are mechanically inclined so we can figure it out im sure.