As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE QUIT CAUSING FORCED LANDING. INVESTIGATION REVEALED PLUNGER RUSTED AND CHECK VALVE WITH BROKEN SPRING INTERNALLY. ACCELERATOR PUMP WAS INOPERABLE AND ENGINE RAN EXCESSIVELY RICH. CARBURETOR LAST OVERHAULED, 8-5-76. SUBMITTER RECOMMENDS CARBURETORS BE REQUIRED TO BE OVERHAULED AT TIMES RECOMMENDED BY PRECISION AIRMOTIVE BULLETIN NR MSA-3. SOME TBO RECOMMENDED ON INSTALLED ENGINE OR 10 YEARS SINCE PLACED IN SERVICE OR LAST OVERHAUL.