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  1. R

    92 90HP fouling plugs badly

    will idle all day long fine .a will idle all day long fine .at wot it runs fine for about 30 seconds then rpm's drop and starts sputtering. pull plugs to find all 3 oil fouled. put new gas/oil filters and lines. no injecting mixing my own fuel. what can i check thanks
  2. R

    Propeller question

    mercury 90 2 stroke on my astr mercury 90 2 stroke on my astro 15 ft. laser II prop with a 22 pitch. with 1 person 5150 rpm with 2 people 5000 and with 3 people 4900 rpm. 1st. question what kind of increase would i get from gaining 300-400 rpm's. it does 47mph at 5150. 2nd. question should i...
  3. R

    1992 90 elpt

    i just bought a boat yesterday i just bought a boat yesterday with a 1992 90 elpt. i need to know two things. 1st. the oil/gas ratio. 2nd. the proper rmp range for the engine. i test drove it yesterday and got it up to 5000 rpm's and it was still accelerating but i let off to be safe . thanks
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