As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 CYLINDER HAD POOR COMPRESSION. IN THE PROCESS OF REMOVING CYLINDER IT WAS NOTED THE ROCKER ARMS WERE INCORRECTLY INSTALLED. THE INTAKES WERE ON THE EXHAUST AND THE EXHAUST WAS ON THE INTAKE. IN CHECKING THE OTHER CYLINDERS, ALL THE REMAINING ROCKER ARMS WERE INCORRECTLY INSTALLED. ENGINE WAS OVERHAULED BY FIREWALL FORWARD INC.