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  1. R

    xr4 150 no spark

    i have a 89 xr4 150 new coils and plugs but no spark out of number 4 and 6 coil put test light on coil have power but no spark
  2. R

    mercury overheating i think

    i have a mercury 1987 150 xr4 i put a new impeller and gaskests in lower end and new thermostats at full speed have over 15 psi and 5 to 7 at ideal temp gauge sits in 1/2 to 3/4 on temp gauge only has a c and h now when you start boat i have a beeeeeeeeeee that doesnt stop going off was a hole...
  3. R

    mercury xr4 150

    i have a ranger 360v and it only does about 45 mph the boat doesnt get on plain very fast does any body now what the best prop is to run on mercury xr4 150 i think the motor is 1987
  4. R

    mercury xr4 150 prop

    does any one no what is the best size prop to run on a mercury xr4 150 thanks i think the years is somewhere around 87 boat only does 45 its a ranger 360v but boat doesnt get on plain very fast once on plain it goes
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