compression test questions?
Just wondering correct procedure for compression test on 1975 johnson 70 hp.I have done lots on car engines, but usually them you unplug the coil wire, do you do the same on a marine engine. also the engine has ngk plugs which i have read here are not the best, any # for champion plugs for this engine.<br /><br />Thanks for the info
Just wondering correct procedure for compression test on 1975 johnson 70 hp.I have done lots on car engines, but usually them you unplug the coil wire, do you do the same on a marine engine. also the engine has ngk plugs which i have read here are not the best, any # for champion plugs for this engine.<br /><br />Thanks for the info