i need help.
i've got this mercruiser 120 with a crappy boat for free - i'm into it for 500 dollars now.
at any rate - the number 2 cyclinder reads absolute zero - the other three will get 150 to 160 psi.
the head gasket had a funky spot - so i replaced it and got the head shaved down to flat at a machine shop - cylinder number 2 is still dead.
i bought new lifters - because at one point i switched them up and got 140 psi out of the cylinder - then got nothing the next day.
at first it would actully get 40 psi if i losened the rocker arm.
Now everyone is trying to tell me that the rings are gone. - i don't believe it.
i've seen the cylinder walls - they are beautiful - I know i wouldn't be able to see if they were gone but the piston seemed just as tight as the others in the cylinder.
i've also tried the put oil in the cylinder and see and check the compression - and i still don't get anything.
i've adjust the valves thousands of times -
i really don't know what it can be.
my last therory is that the cam shaft is screwed up.
does that happen? any other theories?
i just want this in the water.