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    90 hp 2 stroke will not go above 5000 RPM

    All at 130 PSI. Also if the tach is off it does not explain why 13 pitch and a 17 pitch start acting like they are starving for fuel and/or air at the same RPM. I would think a good strong 90 hp would not turn a 17 pitch at 3000 ft more than 5300 to 5500 RPM. That would put 13 pitch very near...
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    90 hp 2 stroke will not go above 5000 RPM

    1989 90 2 stroke mounted on 750 # 17' center console bay boat, motor weight 675 plus 25 gallons fuel, and my weight of 250 # total weight of +/- 1830 #. I am at 3000 feet of elevation. I have two props one 13.8 x 15 pitch that was to be used at 6000 feet and above. One 13.3 x 17 pitch for 3000...
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    90 hp 2 stroke 1998 Merc Poor Performance

    Thanks guys, I will give a report after reeds and prop have been replaced. Lyn Perry
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    90 hp 2 stroke 1998 Merc Poor Performance

    How do I tell if it is slipping?
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    90 hp 2 stroke 1998 Merc Poor Performance

    I may be a little paranoid now. However I ordered a set of Boyesen reeds. they are about double the price as OEM. I am buried in this boat now, so what is another fifty bucks. If I can gain a little HP at 7500 feet elevation it will be worth it. As of now I am sure it will not even plane at that...
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    90 hp 2 stroke 1998 Merc Poor Performance

    I do not know what sync and link is. Timing was checked by marine shop, they did not why it was so bad of idle. The boat at 4000 RPM was on a plane at 16 MPH.
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    90 hp 2 stroke 1998 Merc Poor Performance

    I bought a 1989 Invader 172 (17') Center Console Bay Boat listed at 750 lbs. less motor. It had a 1998 90ELPTO s/n 0G677xxx. It had not been run for 8 years. I check compressor after two days of Sea Foaming cylinders, all cylinders were at 130 PSI. Clean tank (no water). Removed and installed...
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