Engine Lacks Power - Honda 1984 Shadow VT700C Manual

TROUBLESHOOTING
ENGINE LACKS POWER
POSSIBLE CAUSE
1. Reol .. WhHI. off ground end lIPin by hInd. WHEELS 00 NOT SPIN FREELY
• (1)
8r1ke dr&gging .
121
Worn or damaged wheel bearings.
WHEEL SPINS fREELY
(31
WhHI beering oHdllubrication.
+
' " F lnel veer bearing damaga:l .
2. Cheek tlrt
prftSUrl .
PRESSURE LOW
I'
(11 Punctured tire.
121
Flulty tlrt .... Ive.
PRESSURE NORMAL
t
3.
Acetl.,..,1 r.pldly from low to MCOnd. ENGINE SPEED CHANGED
• (1)
Clutch flipping .
t
WH EN CLUTCH IS RELEASeO
121
Worn ell,lIen disc/pl.t. ,
ENGINE SPEED LOWERED WHEN
131
W.rped clutch dlsc/plm.
CLUTCH IS RELEASED
4.
t
Accelerate lightly .
ENGINE SPEED DOES NOT INCREASe
• (1) Cerbur.tor choke closed .
121
CI09\led eir cleaner.
ENGINE SPEED INCREASES
(31
Restricted fuel flow.
1
141
Clogged
muffler.
lSI
Pinched fuel tank vent hose.
5. Cheek ignition timing .
INCORRECT to (1)
Ftulty IpIIrk unit.
121
f8Ulty pulse ;en'rltor.
CORRECT
t
S. Chec
k hy dreu lic IIppel condi tions.
INCORRECT • (1 ) Clogged
tappet
oil holes.
121
Worn val ... SUt.
CORRECT
131
Dammaged
tappet .
t
7.
TMt cvlind'r eotnprtulon . T OO lOW
.. (11
V.lva stuck open.
121
Worn cylind'r ,nd piston rings .
NORMAL
III
lukin; hMe! gasket .
~ 141
Improper v.lva liming.
S. Check ClrbUl'tltor for clogging. CLOGGED
• •
Clrburttor not servic.:l .
frequ,ntly,nough .
NOT ClOGGEO
t
••
Remove tpIIrk plUIi . FOULED
O~
DISCOLORED
• 11)
PIUII' not s&rviced frequ,ntly
,nOUllh .
NOT FOULED OR DISCOLORED
121
Sp,rk plug with incorrect hMt
t
tinge.
10.
Check 011 I_I ,nd condition. INCORRECT
•
111
Oi l level too hi9h.
121
Oil I_I 100 low.
CORRECT
131
Contemlnated oil .
11 . R.-nJ cylinder hMe! cover
,nd
inspect VALVE TRAIN NOT LUBRICATED
• (11 Clogged
oil
passage.
lubric.ltion.
PROPERLY
121
Clogged o il control orifice.
t
VALVE TRAIN lUBRICATED
PROPERLY
I
12. Check for engine owrh .. tlll9. OVERHEATING
• (1)
E_li ... c.lrbon build-up .
in eombunion chamber.
NOT OVERHEATING
121
U" of poor quality fu,l .
t
131
CIUICh .tipping .
13.
Acc,l,rate or run
t1
high 1PHd. ENGINE KNOCKS • (1) Worn piston ,nd cylinder .
121 Wrong type of fu,l.
ENGINE DOES NOT KNOCK
131
E:«:e .. iva Clrbon buiicl·up in
combunion chamber.
141
Ignition timing tOO advanced
(F,ulty 'Perk un itl.
24-2