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    merc 150 1991 blk max

    what rpms should this motor idle at? thanks in advance doe's anyone else have this motor if so any probs?
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    prop pitch?

    bought a 1991 merc 150 w 14.25 /21 pitch prop motor runs wot4900 rpms have a 19 pitch prop on the way should this help me reach 5500 5600 rpms ? any tips or suggestions are appreciated on 17' trophy cntr console rated for 90 hp max gps shows 50 mph at 4900 rpms now
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    96 johnson 150 want go over 5000 rpms

    this past summer i spent 500.00 trying to figure out why my motor would stall at 5000 rpms after 1mech 2months of trying parts and 500.00 i told my mech to call the factory for answers 10 mins later foundout there is a second fuel pump off a25 hp johnson that takes away gas vapors a 25.00 part...
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