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
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...
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...
