KYMCO DINK50 - Page 29

1. GENERAL INFORMATION
1-27
ENGINE LACKS POWER
 Clogged air cleaner
 Clogged fuel filter
 Clogged exhaust
muffler
 Faulty auto bystarter
 Faulty charcoal canister
 Faulty CDI unit
 Faulty A.C. generator
 Worn cylinder and
piston rings
 Blown cylinder head
gasket
 Faulty reed valve
 Clogged carburetor jets
 Fouled spark plug
 Incorrect heat range
plug
 Mixture too lean
 Poor quality fuel
 Excessive carbon build-
up in combustion chamber
 Ignition timing too
early
 Excessive carbon build-
up in combustion chamber
 Poor quality fuel
 Clutch slipping
 Mixture too lean
Inspection/Adjustment
Symptom
Probable Cause
Engine speed
increases
Engine overheats
Correct timing
Engine does not
knock
Plug not fouled or
discolored
Normal
compression
Not Clogged
Engine speed does
not increase
sufficiently
Engine does not
overheats
Incorrect timing
Engine knocks
Plug fouled or
discolored
Abnormal
compression
Clogged
Start engine and
accelerate lightly for
observation.
Check ignition timing
(using a timing light).
Rapidly accelerate or
run at high speed
Test cylinder
compression (using a
compression gauge)
Check carburetor for
clogging
Remove spark plug
and
inspect
Check if engine
overheats
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