As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT ENGINE HARD TO START AND RUNNING LEAN WITH HIGH TIT READING WHEN FLYING. INSPECTED ENGINE AND FOUND CLAMP P/N 24609 (CONTINENTAL) WAS BROKEN THROUGH AND PRIMER VALVE WAS MOVING AROUND UNSUPPORTED. THIS CAUSED THE PRIMER LINE TO WORK-HARDEN AND AT THE B-NUT CONNECTION. SUBMITTER STATED THIS CAN CAUSE ENGINE FIRE AT A HOT START CONDITION.