LONCIN LC2V80FD - Engine Overheating and Abnormal Noise

Troubleshoot
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9. Troubleshoot
1）Difficult to start
Phenomena
Causes
Elimination
Cylinder
Pressure
normal
Spark
plug
normal
Fuel
system
abnormal
Fuel line
blocked
No fuel，or fuel cock off
Fill fuel，turn on fuel
cock
Vent on fuel tank cap
blocked
Unblock
Fuel cock blocked
Clean
Orifice improperly
regulated or blocked
Regulate、clean 、blow
off
Needle valve or float
jammed
Repair or replace
Fuel line
unblocked
Dirt fuel or deterioration
Replace fuel and
clean carburetor
Fuel mixed with water
Replace fuel and
clean carburetor
Exceeded fuel in cylinder
Drain fuel and dry
spark plug
Fuel grade not correct
Fill specified fuel
Fuel
system
normal
Spark
normal
Spark
Plug
poor
carbonized、electrode dirt
Clean carbonized dirt
Isolator damaged
Replace spark plug
Electrode burnt out
Replace spark plug
Improper spark plug
clearance
Regulate clearance
Spark
plug
normal
No spark
High tension wire damaged
Replace high tension
wire
Ignition coil damaged
Replace high tension
coil
Magnetic intensity inefficient
Magnetize or replace
Cylinder
Pressure
abnormal
Fuel
system
normal
Ignition
System
normal
Spark
plug
normal
Piston ring worn out or
broken
Replace
Piston ring agglutinated
Clean carbonized dirt
Spark plug without washer
or tightened loosely
Fit washer or tighten
Leakage between head
and block
Replace cylinder
Poor air tight at valve
Grind or replace