TROUBLESHOOTING
23-3
ENGINE LACKS POWER
1. Drive Train Inspection
Raise wheel off the ground and spin by hand.
Did the wheel spin freely?
YES
–
GO TO STEP 2.
NO
–
• Brake dragging
• Worn or damaged wheel bearings
2. Tire Pressure Inspection
Check the tire pressure.
Are the tire pressures correct?
YES
–
GO TO STEP 3.
NO
–
• Faulty tire valve
• Punctured tire
3. Clutch Inspection
Accelerate rapidly, shift from first to second.
Did the engine speed change accordingly when clutch is released?
YES
–
GO TO STEP 4.
NO
–
• Clutch slipping
• Worn clutch discs/plates
• Warped clutch discs/plates
• Weak clutch spring
• Additive in engine oil
4. Engine Performance Inspection
Accelerate lightly.
Did the Engine speed increase?
YES
–
GO TO STEP 5.
NO
–
• Dirty air cleaner
• Restricted fuel flow
• Clogged muffler
5. Spark Plug Inspection
Remove and inspect spark plugs.
Are the spark plugs in good condition?
YES
–
GO TO STEP 6.
NO
–
• Plugs not serviced frequently enough
• Incorrect spark plug heat range
• Incorrect spark plug gap
6. Engine Oil Inspection
Check the oil level and condition.
Is the engine oil good condition?
YES
–
GO TO STEP 7.
NO
–
• Oil level too high
• Oil level too low
• Contaminated oil
7. Ignition Timing Inspection
Check the ignition timing.
Is the ignition timing as specified?
YES
–
GO TO STEP 8.
NO
–
• Faulty ECM
• Faulty CKP sensor
• Improper valve timing
Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys.
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