"#40973R (Evinrude 40hp, 1
"#40973R (Evinrude 40hp, 1969)
I've got a basic auto compression tester and plan to check my two cylinders. Can someone spell out what I need to do. I think that the compression should be somewhere around 100+ lbs on both and readings should be close to each other. What throttle position do I need? Do I ground the indiv wires during each test? Do I crank ign 4-5 times and then record/reset? Is this right?
Also, what are the correct plugs I should use for this model?
Thanks for your help,
OB"
"#40973R (Evinrude 40hp, 1969)
I've got a basic auto compression tester and plan to check my two cylinders. Can someone spell out what I need to do. I think that the compression should be somewhere around 100+ lbs on both and readings should be close to each other. What throttle position do I need? Do I ground the indiv wires during each test? Do I crank ign 4-5 times and then record/reset? Is this right?
Also, what are the correct plugs I should use for this model?
Thanks for your help,
OB"