Eton ATV8F - TROUBLESHOOTING; Engine Cannot Work

18.TROUBLESHOOTING
18-1 Engine Can Not Work
18.2 Poor Performance At Low And Idle Speeds
18.3 Poor Performance At High Speed
18.4 Loss Power
18.5 Poor Handling
18-1 Engine Can Not Work
Possibility
★ No fuel In fuel tank
★ Clogged float valve
★ Clogged fuel tank cap breather hole
★ Clogged at fuel tube
★ Faulty spark plug
★ Fouled spark plug
★ Faulty CDI unit
★ Faulty alternator
★ Faulty engine stop switch
★ Poorly connected ,broken or shorted wires
★ Broken or shorted ignition coil
★ Broken or shorted spark plug wire
★ Faulty pulse generator
★ Faulty ignition switch
★ Worn cylinder and piston rings
★ Damaged cylinder head gasket
★ Auto choke off or damaged
★ Auto choke power wire disconnected
★ Improperly adjusted air screw
★ Improperly ignition timing
★ Fuel / air mixture ratio is too lean
★ Carburetor flooded
★ Improperly adjusted air screw
★ Fuel / air mixture ratio too rich
★ Auto choke stuck or damaged
★ Air cleaner dirty
C
HE
C
K F
U
EL FL
OW
T
O
C
ARB
U
RET
O
R
SPARK TEST
TE
S
T
C
YLINDER
CO
MPRE
SS
I
O
N
N.G.
N.G.
N.G.
O.K.
O.K.
WEEK OR NO SPARK
LOW COMPRESSION
S
TART THE EN
G
IN
G
ENGINE START BUT STOPS
O.K.
REMOVE AND INSPECT SPARK PLUG
ENGINE DOES NOT FIRE
WET PLUG