To this chapter contents
1. GENERAL INFORMATION
B. Engine run sluggish (Speed does not pick up, lack of power)
1-15
Check and adjustment Fault condition Probable causes
Try gradual acceleration and
check engine speed
y Air cleaner clogged
y Poor fuel supply
Engine speed can be
increased.
Engine speed can not be
increased.
y Lines in fuel tank evaporation system
clogged
y Exhaust pipe clogged
y Fuel nozzle clogged in carburetor.
Check ignition timing (Using
ignition lamp)
y Fuel nozzle clogged in carburetor.
Check cylinder compression
pressure (using compression
Ignition timing correct Incorrect ignition timing
y Malfunction of CDI
y Malfunction of AC alternator
y Cylinder & piston ring worn out
y Cylinder gasket leaked
y Sand hole in compression parts
y Valve deterioration
y Seized piston ring
y Remove foreign
y Remove dirt
y Incorrect spark plug heat range
Compression pressure
correct
No compression pressure
Check if carburetor jet is
clogged
No clogged Clogged
Remove spark plug
No foul or discoloration Fouled and discoloration
Check if engine over heat
y Piston and cylinder worn out
y Lean mixture
y Poor fuel quality
y Too much carbon deposited in
combustion chamber
y Ignition timing too advanced
No knock Knock
y Poor circuit on the cooling system
Normal Engine overheat
Continually drive in acceleration
or high speed
y Too much carbon deposited in
combustion chamber
y Lean mixture
y Poor fuel quality
y Ignition timing too advanced
To Next Page
Loading...
