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re: Yamaha OX66 250 HP issues - loss of water pressure/cavitation

Posted on 7/1/13 at 5:30 pm to
Posted by lsufishnhunt
Member since Jun 2008
1028 posts
Posted on 7/1/13 at 5:30 pm to
When running at 35-3600 RPMS, it'll jump up to about 42-4400 Rpms...
Posted by greasemonkey
Macclenny Fl aka south JAWJA
Member since Aug 2012
2765 posts
Posted on 7/1/13 at 5:36 pm to
I read some of your link and I guess on twins one biting harder than the other could make it hard to diagnose.

I would def do the vst filter and o2s if they havent been done recently.

I dont believe its a hub.

Have the fuel press checked,or google it and rent gauge from parts store and do yourself
I would lean more to surge and do tune up stuff such as filters plugs and o2s if they havent been changed
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