Banks Power Cummins Motorhomes: (Diesel ’93 - 98 B5.9L & C8.3L) Power Systems- Stinger system 8.3L, 250-325-hp rated Class-A Pusher MH - Manual (Page 10)

TROUBLE SHOOTING CHART
SYMPTOM
HIGH EGT
EXCESSIVE FUEL SMOKE
(BLACK)
POOR PERFORMANCE
EXCESSIVE OIL SMOKE
(BLUE)
LACK OF BOOST, EXCESSIVE
OIL SMOKE, & POOR
PERFORMANCE
LOW BOOST, POOR
PERFORMANCE, SOMETIMES
WITH HIGH EGT
LACK OF BOOST OR
LOW BOOST, POOR
PERFORMANCE
PYROMETER
NOT WORKING
BOOST GAUGE
NOT WORKING
GRADUAL LOSS OF
PERFORMANCE, AND
POSSIBLY BOOST
(“FLATTENS OUT” AT HIGH RPM)
CAUSE
• EXCESSIVE FUEL DELIVERY
• FAULTY INJECTOR(S)
• RESTRICTED EXHAUST SYSTEM
• FAULTY INJECTOR(S)
• DIRTY AIR CLEANER
• RESTRICTED AIR INTAKE
• POOR QUALITY or DIRTY DIESEL FUEL
• BLOCKED OR RESTRICTED TURBO
OIL DRAIN
• DAMAGED TURBO BEARINGS,
CAUSED BY DIRTY OIL OR LACK
OF LUBRICATION
• WORN OR DAMAGED ENGINE
COMPONENTS
• RESTRICTED EXHAUST SYSTEM
• INTAKE SYSTEM LEAKS
• EXHAUST SYSTEM LEAKS AHEAD OF
TURBOCHARGER EXHAUST INLET
• BROKEN TURBOCHARGER BLADES
CAUSED BY FOREIGN OBJECTS
ENTERING THE INTAKE OR EXHAUST
SYSTEM
• CHECK FOR REVERSED WIRES
• POOR WIRE CONNECTIONS
• WIRING CONNECTIONS SHORTED
TOGETHER
• LOOSE, BROKEN, PINCHED, CUT, OR
MELTED PLASTIC PRESSURE LINE
• NEEDLE IN GAUGE STICKS
• CLOGGED, OR PARTIALLY CLOGGED,
FUEL FILTER
REMEDY
• CHANGE INJECTOR PUMP SETTING
• REPAIR INJECTOR(S)
• CHECK FOR OBSTRUCTIONS
• REPAIR INJECTOR(S)
• CLEAN OR REPLACE
• CHECK FOR BLOCKED OR COLLAPSED
AIR INTAKE HOSES
• REPLACE FILTERS, CLEAN LINES,
INJECTORS AND TANK AS REQUIRED
• ELIMINATE RESTRICTIONS IN THE
DRAIN LINE
• REBUILD TURBO, CHECK OIL LEVEL,
CHANGE OIL AND FILTER AT REGULAR
SERVICE INTERVALS
• CHECK COMPRESSION, REPLACE
RINGS OR VALVES
• ELIMINATE RESTRICTIONS, CHECK
FOR OBSTRUCTIONS
• LOCATE AND SEAL LEAKS; CHECK
INTAKE CLAMPS & MANIFOLD GASKETS
• LISTEN FOR LEAKS, REPAIR AS
NECESSARY
• REBUILD TURBOCHARGER; ELIMINATE
MEANS OF FOREIGN OBJECT ENTRY
• REVERSE WIRES
• CLEAN AND SECURE CONNECTIONS.
IF GAUGE READING CHANGES WHILE
WIGGLING CONNECTIONS,
CONNECTIONS ARE FAULTY.
• INSULATE CONNECTIONS
• REPAIR OR REPLACE AS REQUIRED,
RE-ROUTE LINE AWAY FROM HAZARDS
• REPLACE GAUGE
• REPLACE FUEL FILTER(S)
10 P.N. 96381