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#8
08-15-2006, 07:19 PM
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Re: Problems w/ Yamaha OX66 250HP
If you were at all working on the motor, you may have a loose ground wire. I had a problem similiar to yours and it turned out to be a loose bolt holding several ground wires to the block located above #1 or # 2 piston(can't remember exactly). You may want to also check the compression in all cylinders, that could cause serious lose in rpm's or a lower idle such as 400 rpms.
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