As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT, SHORTLY AFTER TAKEOFF THE PILOT EXPERIENCED A ROUGH RUNNING ENGINE, ACFT RETURNED TO AIRPORT. DURING INSPECTION OF THE ENGINE THE MECHANIC DISCOVERED DEBRIS IN THE CARBURETOR BOWLS. AFTER FURTHER INSPECTION THE MECHANIC DISCOVERED DETERIORATION OF THE INTERIOR MATERIAL IN THE FUEL HOSES. THE HOSES WERE INSTALLED NEW AT 158.95 HOURS FOR COMPLIANCE OF THE 5 YEAR HOSE REPLACEMENT SCHEDULE.