Home › Forum › Ask A Member › Evinrude compression › Re: Evinrude compression
December 9, 2016 at 2:23 pm
#48919
Agree with what Ben just wrote. But Zero compression, like none at all, pretty much indicates the piston isn’t moving or is broken. Or the head gasket is blown, not just leaking. No bypass covers on a 5.5. Stick a screwdriver in the spark plug hole to see if the piston is moving. If it is, off with the head for a looksee.