CAC Gasoline Engine Maintenance And Servicing Manual
72
4. difficult to start for engine when temperature is high:
Cause
correction
(1). Air filter is dirty or blocked clean air filter core or replace case
(2). low cylinder compression pressure sent to service spot for check and
service
(3). Hydraulic valve lifting rod is damaged replace the lifting rod
5. The starter noise or rough engagement.
Cause
correction
(1). Flywheel gear ring or starter’s pinion loose or broken replace flywheel gear ring or starter
(2). Starter retaining bolt loose or missing tighten retaining bolt or replace bolt
(3).the parts in Starter worn out or damaged replace starter
6.Engine stalls right away after started.
Cause
Correction
(1). Ignition coil connection loose or damaged connect ignition coil or replace ignition coil
(2). Vacuum leakage in intake manifold replace sealing gasket or replace connecting
pipe
(3) carburetor float position not proper check carburetor float or needle valve
(4). mail measuring orifice blocked check and clean mail measuring orifice
(5). Idle cut-off valve damaged and not open check circuit and solenoid
(6). Idle speed too low adjust engine idle speed
(7). idle speed fuel outlet port or transition port blocked check and clean
7.Rough engine idle speed
Cause Correction
(1). Air filter core blocked clean or replace
(2). vacuum leakage in Intake manifold or relevant hose check and service
(3). Spark plug corroded, damaged or
Spark plug gap not correct replace spark plug
(4). Hydraulic valve lifting rod damaged replace the lifting rod
(5). Idle speed fuel outlet port or transition port
blocked check and clean
(6). fast idling adjustment not correct check fast idling spring for
fallout ,readjustment.
(7). Low or unstable Cylinder compression pressure check and service
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