Engine Lacks Power - Honda Gold Wing GL1200D Shop Manual

~HONDA
r-
TROUBLESHOOTING
GL1200D' GL1200A
ENGINE LACKS POWER
POSSIBLE CAUSE
1. Raise wheels off ground and spin
by
hafld
WHEELS 00 NOT SPIN FREELY
•
' " Brake
dragging
121
Worn or damaged wheel be"inlilS
WHEEL SPINS FREELY ' "
Wheel bearing needs lubrication
I
' "
Drive Chain too tight
151
Rtllr axle nut excessively
tight
' " Final gear bearing damaged
2.
Check tire pressure PRESSURE LOW .. (I) Punctured tire
121
Faulty tire valve
PAESSURE NORMAL
t
3. Check clutch slipping CLUTCH SUPS
•
' "
Faulty cluteh hydraulic system
I
' " Clutch spring weak
CLUTCH ENGAGED PAQPERL Y 131
Worn clutch disc/plate
I
' " Warped clutch disc/plate
••
Accelerate lightly
ENGINE SPEED DOES NOT INCREASE
•
' " Incorrect choke cable
free
play
' " Clogged air cleaner
ENGINE SPEED INCREASES
' "
Restricted fuel flow
I
' " Clogged muffler
lSi Clogged fuel tank vent hoi.
' "
F....lty carbUretor
5.
Ol.eck ignition timing INCORRECT .. (I) Fl!Illlty ignitiOn control unit
' "
F....lty pulse gener.ltor
CORRECT
I
'"
••
Check tappet noise
ABNORMAL
•
F....lty hydraulic tappet
' " Worn valve seat or cam$hah
NORMAL ' "
Oil level too low
I
TOO LOW III
7.
T!'$t cylinder cOffipre$lion
•
Vallie stuck open
121
Worn cylinder and piston rings
NORMAL
' "
Leaking head gasket
l
' "
Improper vallie limin~
' "
Faulty hydraulic tappet
••
Check carburetor for clogging
CLOGGED
'Ill
Carburetor not serviced
frequently enough
NOT CLOGGED
I
' "
,.
Remove ~park plug
FOULED OR DISCOLORED
Plug~
not
~erviced
frequently
enough
NOT FOULED OR DISCOLORED
' "
Spark plug with incorrect hUt
I
range
10.
Check oil level and condition
INCORRECT
.. 111
Oil level tOO high
' "
Oil level too low
CORRECT
131
Contaminated oil
I .
11.
Rtmove cylinder head cover and inspect
VALVE TRAIN NOT LUBRICATED
•
' "
Oogged oil passage
lubrication
PROPERLY ' "
Oogged oil conlro! orifice
t
' "
Oogged oil filler or screen
VALVE TRAIN LUBRICATED PROPERLY
.
t
"- Check for engine owmeatinll
OVERHEATING
•
' "
Collant level 100 low
' " Fan mOtOr nOt working
NOT OVERHEATING
(thermostatic switch faultyl
1
' "
Thermostal srock closed
' " El<cessive carbon builcHlP
in combuuion chamber
lSi Use of poor quality fuel
' " Improper ignition timing
".
Accelerate or run at
hi~h
speed
ENGINE KNOCKS
•
III
Worn piston and cylinder
' " Wrong type of fuel
ENGINE DOES NOT KNOCK
' " El<cestive carbon build-up In
combustion chamber
,.,
Ignition timing too advanced
22-2