2002 225 optimax. 31 hours on new powerhead. 416 total hours
Picked up a 2002 stratos 21xl magnum about 6 months ago with a 2002 225 optimax "my first merc" I have noticed at an idle it seems to be running a little rough at low rpms once I'm up on plain and moving you can notice anything at all runs great all the way up too 5700rpms where I'm getting 70.86 on gps with a 25p tempest. Curious if its a fuel issue seeing as in las vegas I have yet to find any ethanol free fuel. also I have been running 91 with merc quick clean every other tank with merc optimax oil. After doing some reading I am not so sure the 91 is such a great idea. Any ideas as to what could be going on.