low compression 60 hp johnson

[lonecow69]

my compression on my top 2 cylinders is 120, while my bottom is 60. will I damage the engine if I continue to run this way until I can get it in the shop? What do you think the problem is? I was running great and suddenly lost a lot of power. It seems to run good, but the power has been greatly reduced.

 

[S.T. Marine]

Re: low compression 60 hp johnson

Do not run it anymore. You still might have a usable crank but if you continue to run it you may screw that up also. The cyliner is probably scored due to not enough oil. Is the motor oil injected?

 

[lonecow69]

Re: low compression 60 hp johnson

yes it is oil injected. when I remove the sparkplug and turn it over, it does move up and down.