Section 02 TROUBLESHOOTING
Subsection 01 (TROUBLESHOOTING CHART)
ENGINE RUNS ON BOTH CYLINDERS AT IDLE AFTER ENGINE
IS WARM-UP (RFI MODELS)
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
– Water temperature sensor (WTS) and
its circuit
– ECM parameters
– Closed TPS.
Refer to COMPONENT ADJUSTMENT,
INSPECTION AND REPLACEMENT.
ENGINE MISFIRES, RUNS IRREGULARLY
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
Fouled, defective, worn spark plugs
Check/verify heat range/gap/replace
Faulty ECM
(
RFI models
)
Check, refer to ENGINE MANAGEMENT
Defective trigger wheel/CPS
(
RFI models
)
Check, refer to ENGINE MANAGEMENT
Too much oil supplied to engine Adjust oil injection pump
Bad ignition coil wiring
Check wiring condition and proper
grounding of ignition coil
Faulty ignition coil, or bad connector
Check coil. Refer to ENGINE
MANAGEMENT or ELECTRICAL
SYSTEM
Weak spark
Poor engine ground
Check/clean/repair
smr2005-046 29
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