2003 model with less than 200 hours and blew #2 piston.It overheated and wiped the rings so I had zero compression in #2.
I had it re-sleeved, injectors flow checked and the #2 injector replaced. 20 hours later #3 piston does the same thing? Why is this engine so finicky? Many people have had this re-occurring issue as I understand.
I pulled the diagnostics from the computer and the High pressure pump is fine. the only alarm codes are from overheating but the buzzer never gets a chance to go off before the engine shuts down.
i think Yamaha should recall these engines and repair the problem.if they know what is causing the issue then they should send out a bulletin so people like me do not continue to waste money trying to fix a bad engine design!
Reviewer is in unhappy mood. Please immediately contact the author of this review to discuss damaged or defective of yamaha motor boat engine and associated monetary loss in the amount of $2500. Yamaha Motor needs to offer any options to resolve the issue according to poster's claims.