SDR 95ZZZX4019

Service difficulty report · Valve · Cessna 150L

Difficulty date: July 14, 1995
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N6836G
Make and model: Cessna 150L
Aircraft serial: 15072336
Engine: Cont O200A
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Valve
Part number: 629404
Condition: Binding
Location: Nr 3 Cyl Exh
Part time: 229 hours
Stage of operation: IN
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

INSPECTION REVEALED VALVE STEM TIGHT IN GUIDE DUE TO EXCESSIVE CARBON BUILD-UP. AFTER CLEAN-UP OF GUIDE, THE CLEARANCE WAS MEASURED AND DETERMINED TO BE IN LIMITS. CAUSE OF CARBON BUILD-UP, POSSIBLE RICH CARBURETOR. INSPECTION OF 3 REMAINING CYLINDERS ON ENGINE REVEALED NO PROBLEMS. ENGINE TT 4,082.0. TSM O/H, 979 HOURS.

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