seize

I have a 97 XP with the 787 carbed, starter hits but does not turn over I took the head off and the pistons flutter a little but does not make a full rotation seems seized but why do pistons move? Please help

Hey Team, Its finally time to take my ski's out of storage for the spring / summer and have 2 questions: 1) I've been doing the annual maintenance myself for a couple years with no issues, however, I have noticed 1 discrepancy between what the Sea-Doo Manual says, and what NGK says. NGK Spark...

I just seized my rear cylinder in my 1995 GTX 657 engine and need some help preventing it from happening again. There was a small crack on the rotary valve cover MAG side top which I found after performing a leak down test. I'm going to replace the rotary cover, top end rebuild and new crank...