NZR wrote: I'm after opinions and suggestions on these motors... anything could be helpful besides "Buy a new motor" because I absolutely categorically do not have the money for that :p First off I've got a 135hp 1974 Evinrude with cylinder compressions at: 122 122 99 118 Opinions: Good/bad/tollerable, maintenance etc I could do to possibly improve the low one? I've done some research and got sime.ideas but there's some extremely knowledge fullas among you lot. Other issue I'm having with the 135 is it idles badly. Give it any throttle at all and it runs smoothly for as long as you want it to but try and sit still... nope. Have done spark plugs, running a brand new battery, checked carb and jets are clean etc. Secondly my flatmate has a 1986 Australian built 40hp Evinrude. This one is a lot sadder running at 109 and 50 psi. It goes but not happily. |
Grasshoppa wrote: or it could jst be a head gasket......simple things first...... What cylinder is @ 99psi?, assume its #3 given your order but some people count cylinders left/right and some up/down |
Grasshoppa wrote: i would bet my left ..... the bottom crank seal has failed or maybe the lower exhaust has rotted out as described by Durban, both let water into bottom cylinder which rusts/seizes rings Does the sparkplug from #4 appear rusty or discoloured compared to the other 3? Unfortunately neither of these issues are economic to repair, if water has been present the crankshaft will be shot |
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