225 opti-max / missing at 1800 rpm

[Fritz]

My engine has developed a miss at 1800 rpms and I was wondering if anyone else has had this happen? I'm going to put new plugs in on monday and hope that helps, but if it doesn't, I need some advise. These plugs are the original set and have one season of use. The engine is a 2000 so it doesn't fall in the time frame for the update kit that some other opti's need. So if you've got any Ideas please let me know. Buying a Yamaha is not an option so I don't need to hear that. Thanks for any advice. Ryan Relien
I have consulted a local dealer and it was there advise to start with plugs.

[Jeffro]

Hey Fritz,
I've got the same engine. Last fall it became hard to start and I noticed a ping or knock at around 4k rpm. Dealer put the platinum ngk plugs in and all has been well since. Mercury covered it under warranty.

Jeff Zurawski
Downers Grove, IL
A Proud Lund, Mercury, Prestige, Motorguide, Lowrance, Bracktepro Owner

[Walizz 1]

Fritzi me boy, Sounds like plugs to me. The factory plugs are sometimes not the best.