"My 2003 225 with 170 hours had the #6 cylinder problem (water entering through exhaust). I was very indebted to members of this board - especially W D Neal - for their helpfujl advice. It has been in the Honda shop the past three months (over the NZ summer) whilst we negotiated repairs. They did a full service, and handed it back to me last week. Five hourson, at about 4000rpm and in good conditions it went BANG. Literally, BANG. And stopped.
Back to the shop: inlet valve on #3 cylinder disintegrated (see pix). This is the opposite side to the one that had been worked on. This head had not been removed. Problem is to find cause. Shop did decompression and leakdown tests before releasing it to me: all good. Therefore (they say) not a bent valve. One theory is the valve seal came free.
I would appreciate any thoughts, speculations or deep knowledge. I have some other pix & can answer questions. Big question in my mind is why this happened just 5 hours after a major overhaul. Seems to me the two events should somehow be related. Thanks for your input.
Stbd Cylinder Head"">
Stbd Cyl Head 2
Back to the shop: inlet valve on #3 cylinder disintegrated (see pix). This is the opposite side to the one that had been worked on. This head had not been removed. Problem is to find cause. Shop did decompression and leakdown tests before releasing it to me: all good. Therefore (they say) not a bent valve. One theory is the valve seal came free.
I would appreciate any thoughts, speculations or deep knowledge. I have some other pix & can answer questions. Big question in my mind is why this happened just 5 hours after a major overhaul. Seems to me the two events should somehow be related. Thanks for your input.