Engine Lacks Power - Honda CB HORNET 160R 2015 Shop Manual

TROUBLESHOOTING

ENGINE LACKS POWER

1. Drive Train Inspection
Raise the wheels off the ground, and spin them by hand.
Does the wheel spin freely?
– • Brake dragging
NO
• Worn or damaged wheel bearings
• Bent axle
– GO TO STEP 2.
YES
2. Tire Pressure Inspection
Check tire pressure.
Are the tire pressures low?
– • Faulty tire valve
YES
• Punctured tire
– GO TO STEP 3.
NO
3. Clutch Inspection
Accelerate rapidly from low to second.
Does the engine speed change accordingly when clutch is engaged?
– • Clutch slipping
NO
• Improperly adjusted clutch lever free play
• Worn clutch discs/plates
• Warped clutch discs/plates
• Weak clutch spring
• Additive in engine oil
– GO TO STEP 4.
YES
4. Engine Performance Inspection
Accelerate lightly.
Does the engine speed increase?
– • Fuel/air mixture too rich or lean
NO
• Clogged air cleaner
• Restricted fuel flow
• Clogged muffler
• Clogged fuel fill cap breather
– GO TO STEP 5.
YES
5. Engine Performance Inspection
Accelerate or run at high speed.
Is there knocking?
– • Worn piston and cylinder
YES
• Use of poor quality fuel
• Excessive carbon build–up in combustion chamber
• Ignition timing too advance (Faulty CDI or ignition pulse generator)
• Lean fuel mixture
NO – GO TO STEP 6.
6. Ignition Timing Inspection
Check the ignition timing.
Is the ignition timing correct?
– • Faulty CDI
NO
• Faulty ignition pulse generator
YES – GO TO STEP 7.
7. Engine Oil Inspection
Check the engine oil level and condition.
Is there correct level and good condition?
– • Oil level too high
NO
• Oil level too low
• Contaminated oil
– GO TO STEP 8.
YES
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