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10-9 ENGINE MISFIRE
Phenomenon
Possible causes
Remedy
1. Ignition system
1) Improper spark plug gap or damaged electrode
Cealn, adjust or replace
2) Ignition coil faulty
Replace
3) Damaged ignition system wirings
Replace
4) Poor connection of ignition system wirings
Check and connect properly
2. Fuel system
1) Lean or rich air/fuel mixture
Disassembly and repair
2) Carburetor clogged
Disassembly and repair
3) Improper idling adjustment of carburetor
Adjust
4) Improper gasoline or water infiltration
Replace
3. Engine core
componets
1) Valve heat deterioration or improper valve adjustment
Adjust or replace
2) Valve spring deterioration
Replace
3) Low compression
Check, adjust or replace
Содержание EH72
Страница 1: ...SERVICE MANUAL EH72 ENGINES Model PUB ES1545 Rev 09 03 ...
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Страница 74: ...PRINTED IN THE USA ...