1
. GENERAL INFORMATION
1-23
MYROAD 700i
TROUBLESHOOTING (XCITING 250 AFI)
ENGINE WILL NOT START OR IS HARD TO START
c
Empty fuel tank
d
Clogged fuel pump
filter
e
Faulty fuel pump
f
Faulty fuel cut-off
relay
g
Cracked fuel hose
c
Faulty spark plug
d
Fouled spark plug
e
Faulty ignition coil
f
Faulty CPS
g
Broken or shorted ignition coil
h
Broken or shorted CPS
i
Faulty ignition switch
c
Faulty fuel injector
d
Clogged fuel injector
e
Faulty ECU
c
Starter motor idles but
crankshaft does not rotate
d
Valve clearance too small
e
Improper valve and seat contact
f
Worn cylinder and piston rings
g
Blown cylinder head gasket
h
Flaws in cylinder head
i
Seized valve
j
Improper valve timing
Inspection/Adjustment
Probable Cause
Spark jumps
Fuel supply
Weak or no spark
No fuel supply
Test cylinder
compression
Symptom
Fuel reaches fuel
injector
Fuel does not reach
fuel injector
1.
Make sure engine stop switch
is ON.
2.
Put the side stand up.
3.
Connect the diagnostic tool,
then check EMS and correct
problems.
Remove the fuel injector, start
the starter motor to check fuel
injector operation.
Normal
compression
Low or no
compression
Remove spark plug and
install it into spark plug
cap to test spark by
connecting it to engine
ground
