Honda Transalp XL700V Manual page 593

13. Engine Knocking Inspection
Accelerate or run at high speed.
Is the engine knocking?
YES
NO
POOR PERFORMANCE AT LOW AND IDLE SPEED
1. Intake Air Leak Inspection
Check for leaking at insulators.
Are there leaks?
YES
NO
2. Spark Test
Perform spark test.
Is there weak or intermittent spark?
YES
NO
3. Fuel Pump Inspection
Inspect the fuel flow.
Is the fuel pump unit normal?
YES
NO
4. Ignition Timing Inspection
Check ignition timing.
Is the ignition timing correct?
NO
YES
5. PGM-FI System Inspection
Check the PGM-FI system.
Is the PGM-FI system normal?
NO
YES
– • Worn piston and cylinder
• Wrong type of fuel
• Thermostat stuck closed
• Excessive carbon build-up in combustion chamber
• Ignition timing too advance (Faulty ECM)
• Faulty CKP sensor
– • Engine does not knock.
– • Loose insulator bands
• Loose insulator mounting bolts
• Damaged insulator
• Faulty O-ring
– GO TO STEP 2.
– • Faulty spark plug
• Fouled spark plug
• Loose or disconnected ignition system wires
• Faulty CKP sensor
• Faulty ignition coil
• Faulty engine stop switch
• Faulty ECM
– GO TO STEP 3.
– GO TO STEP 4.
– Faulty fuel pump unit (page 5-58)
– • Faulty ECM
• Faulty CKP sensor
• Faulty TP sensor
• Improper valve timing
– GO TO STEP 5.
– Faulty PGM-FI system (page 5-13)
– GO TO STEP 6.
TROUBLESHOOTING
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