Hey all. I have a 2002 Ultra 21' with a 496 Mag and Bravo One. I've been banging my head trying to figure out why it takes on water. At first I thought the rear vents were taking on water via the wake when I come off plane but I confirmed that is not the case today by temporarily blocking them off.
I spent a lot of time idling/floating today while I looked around the engine compartment and I could not find the leak. Water level in bilge while floating seems to stay the same. It appears to only take on water when moving. Of course I was by myself today so I unfortunately wasnt able to have someone drive for me while I looked for the source. The best I could do was to abruptly close throttle and run back to see if water came pouring in from the rub rail seam, or a thru hull bolt, or something like that but nothing obvious. Leads me to believe the source is down below more. Its not a small amount of water either. It can definitely take on a good amount in a short ride.
Bellows look OK to me. Clamped securely and no visible cracks. Not sure if this matters but the exhaust bellow is the type that clamps only on the transom end while the other end just slips over the drive when trimmed down. My exhaust is thru-hull anyway. Hull and transom are very clean with no damage or cracks either. I followed all the hoses that contain water and everything is secured and in good shape. When I got home today, I ran it on the garden hose and revved it up while in neutral to see if maybe the leak showed up at higher RPM but still no sign of it. Im so lost!
I already removed the rear seat. Guess my next step is to remove the hatch and take it for another spin with a driver so I can spend my time in the back looking for the leak. You guys have any other possible ideas or recommendations for me?
I took a bunch of random photos just in case it helps. Thanks!