Part Iv Faults Diagnosis; Difficulty Of Engine In Starting - LONCIN LC2V80FD Maintenance Manual

Part IV Faults Diagnosis

4-1 Difficulty of engine in starting

Difficulty in
starting
Fuel system
Ignition system
Compression
system
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Excessive engine oil
(Stop for several minutes before restarting)
Insufficient fuel
(Add fuel oil into the fuel tank)
Fuel filter screen blocked
(Clean fuel filter screen)
Fault or improper adjustment of carburetor
(Refer to Section 5-2-4)
Air cleaner dirty
(Clean or replace)
Fault of spark plug
(Refer to Section 3-5)
Improper clearance of spark plug
(Refer to Section 3-5
Improper clearance between ignition coil and flywheel
(Refer to Section 5-2-6)
Fault of ignition coil
(Refer to Section 5-2-6)
Fault of ignition switch
(Replace ignition switch)
Insufficient magnetic density
(Replace flywheel)
Improper clearance of valve
(Refer to Section 3-6)
Gasket of cylinder head damaged
(Refer to Section 5-2-7)
Loosened cylinder bolt
(Refer to Section 5-2-7)
Seal of valve not good
(Refer to Section 5-2-7)
Excessive wear of cylinder/piston/piston ring
(Refer to Section 5-2-9)
Excessive wear of camshaft
(Refer to Section 5-2-9)