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  1. R

    Run-a-way Engine...

    In reading the repair manual for my v4 Johnson 90hp it states numerous times not to rev the engine when cooling muffs are on and to only rev the engine in a test tank or lake/ocean... Why - What happens if you do?<br /><br />Thanks
  2. R

    Compression and fuel pump

    1985 Johnson V4 -90hp<br /><br />Well guys and gals, I think I've done my homework but wanted to check here to see if it is right... I had a fuel pump problem a week or two ago and replaced all my lines from the tank to the old fuel pump and replaced the pulse limiter... took the boat out and it...
  3. R

    Compression - Good or Bad

    just did a compression test on my 1985 Johnson V90 and came up with 120-118-120-111... What causes one cylinder to fall out when the rest of them are top notch. Plugs look good (consistant) and spark and fuel are getting to all cylinders. I was given the motor a couple of months back and I know...
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