I have a 50 HP yamaha 4 stroke OB, measured the following compression Cyl 1/100 psi, 2/140 psi, 3/100 psi, 4/100 psi.
understand that 90-100 psi is normal. Why would cyl 2 read 140 PSI. and what can be done?
Did the leak-down test with 100 PSI the air loss was zero
understand that 90-100 psi is normal. Why would cyl 2 read 140 PSI. and what can be done?
Did the leak-down test with 100 PSI the air loss was zero