TROUBLESHOOTING
23-5
POOR PERFORMANCE AT LOW AND IDLE SPEED
1. Spark Plug Inspection
Remove and inspect spark plugs.
Are the spark plugs in good condition?
YES – GO TO STEP 2.
NO – • Plugs not serviced frequently enough
• Incorrect spark plug heat range
• Incorrect spark plug gap
2. Ignition Timing Inspection
Check the ignition timing.
Is the ignition timing as specified?
YES – GO TO STEP 3.
NO – • Faulty ECM
• Faulty CKP sensor
• Faulty VS sensor
• Improper valve timing
3. Fuel Pump Inspection
Inspect the fuel flow.
Is the fuel pump unit normal?
YES – GO TO STEP 4.
NO – Faulty fuel pump unit (page 5-56).
4. PGM-FI System Inspection
Check the PGM-FI system.
Is the PGM-FI system normal?
YES – GO TO STEP 5.
NO – Faulty PGM-FI system (page 5-11).
5. IACV Inspection
Check the IACV operation (page 5-90).
Does the IACV operates normally?
YES – GO TO STEP 6.
NO – Faulty IACV.
6. Intake Pipes Leaking Inspection
Check for leaks at the insulators or air cleaner housing.
Are there leaks?
YES – • Loose insulator
• Damaged insulator
• Damaged air cleaner housing
Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys.
email: info@motomatrix.co.uk
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