2004 mercury 250 optimax

by Kelly
(Bagdad Arizona, U.S.A.)

engine will not tach over 1900 rpm's under load. #3 cylinder shows signs of too much fuel in that cylinder. new spark plugs made no difference.

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Jun 29, 2021
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2004 mercury 250 optimax
by: Anonymous

Injector possibly stuck open. Wouldn't to have them cleaned.

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