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    Low RPM at WOT again !

    I have a Mercury 1988 v150 black max. I have researched past forums for a couple months now and no luck. Give me some new ideas. Let me start from the beginning. In 2008-2009 I had the same problem but intermittant. After the motor would warm up I could get 6000 rpm at WOT. If I let it set for...
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    intermitant power 1988 150hp black max

    :DI have read many posts and manuels and tried most of them. I bought the boat and motor 3 years ago and have had the same problem all along. At times the motor will take off with full power 4900 rpm ( I know it should be 5000-5500 rpm) I live and use the boat at 4600 feet. At other times it...
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