What was found
TAXI, ENG RUNS ROUGH. FUEL INJECTOR LINES DISCONNECTED, NR 5 CYL FUEL INJECTOR NOT FLOWING CORRECTLY. PROBLEM FUEL DISTRIBUTOR MANIFOLD OR SPIDER. FILTER SCREEN IN SPIDER REMOVED, 9 PARTICLES FOUND. LARGEST 7CM LONG & 1MM WIDE. MANIFOLD DISASSEMBLED & 2 PARTICLES FOUND NEAR OUTLET NR 5 CYL. LARGEST 1CM WIDE BY 1CM LONG. TWO PARTICLES HAD GOTTEN PAST FILTER SCREEN. AFTER FILTER SCREEN & DISTRIBUTION MANIFOLD CLEANED & REASSEMBLED. FLOW PATTERN NR 5 CYL NORMAL. FUEL SCREEN ON FUEL DISTRIBUTION MANIFOLD IS NOT LISTED FOR PERIODIC INSP OR CLEANING. ENG HAS INTERMITTENT PROBLEM OF ROUGH RUNNING, 1ST TIME INDICATION OF DEBRIS IN FUEL DISTRIBUTION MANIFOLD. IO550P OPERATORS SHOULD BE MADE AWARE OF PROBLEM.