HONDA
CB400T
TROUBLESHOOTING
9. Remove spark plug
PLUG IS NOT FOULED
OR DISCOLORED
10. check oil level and condition
OIL LEVEL CORRECT
i
.
11. Remove cylinder head cover
and check lubrication.
VALVE TRAIN
SUFFICIENTLY LUBRICATED
I
+
12. Check for engine
overheating
ENGINE DOES NOT
OVERHEAT
I
i
13. Accelerate or run
at
high
speed.
Possible Cause
PLUG IS FOULED OR
-
(11 Plugs not serviced frequently
OR DISCOLORED
enough
(21 Spark plug heat range incorrect
(31 Wrong fuel
OIL LEVEL INCORRECT
-----+
(11 Oil level too high
(21 Oil level too low
(31 Contaminated oil
VALVE TRAIN
-
(11 Clogged oil passage
INSUFFICIENTLY (21 Clogged oil control orifice
LUBRICATED
ENGINE OVERHEATS
c
(11 Excessive carbon build-up on com-
bustion chamber wall
(21 Wrong type of fuel
(31 Clutch slipping
(41 Fuel air mixture too rich
ENGINE KNOCKS
-
(11 Worn piston and cylinder
(21 Fuel air mixture too lean
(31 Wrong type of fuel
141 Excessive carbon build-up in combus.
tion chamber
(5)
Ignition timing too early (Defective
C.D.I. unit or A.C. generator)
Date of Issue: September. 1977
o
HoNDA MOTOR
co.,
LTD.
19-3
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