I did a couple of compression tests on my 77 140hp Evinrude today, good comp tester and all plugs out I got the following:
Bank 1,3 = 135/130psi
Bank 2,4 = 150/150psi
Is this a cause for concern? Comp seems quite high but quite a variation between banks. I'm wondering if 1,3 may have slightly larger domes, thought I would put it out there and canvass opinions from the experts thanks.
Bank 1,3 = 135/130psi
Bank 2,4 = 150/150psi
Is this a cause for concern? Comp seems quite high but quite a variation between banks. I'm wondering if 1,3 may have slightly larger domes, thought I would put it out there and canvass opinions from the experts thanks.