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re: Optimax - need diagnosis

Posted on 9/28/12 at 10:46 am to
Posted by conundrum
Baton Rouge
Member since Aug 2010
247 posts
Posted on 9/28/12 at 10:46 am to
got a yamaha
Posted by AlxTgr
Kyre Banorg
Member since Oct 2003
81783 posts
Posted on 9/28/12 at 10:47 am to
quote:

got a yamaha
I prefer that my engines don't explode.
Posted by RingLeader
Slidell, LA
Member since Jan 2007
1051 posts
Posted on 9/28/12 at 10:52 am to
I've changed the plugs on mine. It takes about 45 minutes per motor. You have to take off the lower cowling (or remove bolts and spread the 2 halves) to effectively get to the bottom 2 plugs. Otherwise you will have to unplug several of the air and fuel injectors to get to each plug as well. Its pretty funky in there.

How is your battery? Opti's won't start/run worth a shite on a failing/weak battery. Need 1000 MCA minimum.

Could also have fouled fuel pump or injectors. Before you got the motor did it sit for a while? EtOH fuel?
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