Port side engine still weak, advise needed please, 2005 496 ho's
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Port side engine still weak, advise needed please, 2005 496 ho's

  1. #1
    Senior Member JETDOC's Avatar
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    Oct 2008
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    Default Port side engine still weak, advise needed please, 2005 496 ho's

    My port side engine is strong until approx 2900 rpms, will only run faster with the starboard engine accelerating to bring it up. it is good & strong up to that point. Rinda scanner show no faults & the ecm shows 100% power available. Did the induced misfire test to all cylinders & all are firing, swapped out fuel filters & then the whole cool fuel/water seperator modules. Put a fuel press gauge on the injector manifold & it shows a rock steady 44 psi the whole time, even at 2900 rpm's when it stops accelerating. checked the throttle cable & linkages to verify full movement.


    Not sure where to go next, thinking about swapping ecm's. Any advice is appreciated
    2005 Sunsation 32' MCOB, 496 HO'S

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  3. #2
    Senior Member Skydog's Avatar
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    Did you check the cranking compression? Do all the spark plugs look good?

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