Poor Performance At Low And Idle; Troubleshooting - Honda 2005-2008 RX500 FA Service Manual

'61HN252' by American Honda Motor Co. - Page 535 of 540
[2005-2008] [TRX500 FA/FGA]
POOR PERFORMANCE AT LOW AND IDLE SPEED
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1. Pilot Screw Inspection
Check carburetor pilot screw adjustment.
Is the adjustment correct?
NO See page 5-19
YES GO TO STEP 2.
2. Intake Air Leak Inspection
Check for leaking carburetor insulator.
Is there leaking?
· Loose carburetor insulator bands
YES
· Damaged insulator
NO GO TO STEP 3.
3. Spark Test
Perform spark test.
Is there weak or intermittent spark?
YES · Faulty spark plug
· Fouled spark plug
· Loose or disconnected ignition system wires
· Broken or shorted spark plug wire
· Faulty ignition coil
· Faulty ignition pulse generator
· Faulty engine stop switch
· Faulty ignition switch
· Faulty engine control module (ECM)
GO TO STEP 4.
NO
4. Ignition Timing Inspection
Check the ignition timing.
Is the ignition timing correct?
NO · Faulty engine control module (ECM)
· Faulty ignition pulse generator
Faulty automatic transmission system
YES
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TROUBLESHOOTING

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3/9/2008 11:33 PM