As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED A SNAP OR SOMETHING GAVE AS HE ADVANCED THROTTLE ON GROUND. ENGINE RPM STAYED AT 1,100 RPM. INVESTIGATION REVEALED THAT CABLE OUTER HOUSING SLIPPED OUT OF METAL RETAINER AT CLAMP NEAR CARBURETOR. OUTER HOUSING APPARENTLY SHRUNK FROM HEAT. REPLACEMENT PART FROM CESSNA HAS RUBBERIZED HOUSING. EXISTING UNITS SHOULD BE INSPECTED.