Outcome of my compression test, what is wrong?

Question

well I just got done with the compression check, here are the outcomes from the front of the engine to the back (firewall):

spark plug hole 1: 200 psi

spark plug hole 2: 200 psi

spark plug hole 3: 200 psi

spark plug hole 4: 200 psi

spark plug hole 5: 100 psi

spark plug hole 6: 200 psi

so obviously something is wrong, what is the problem I need to deal with?

Answer 1

It's odd that 5 of the cylinders have the exact same compression. Are you cranking it over 4 revolutions?