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ENGINE BACKFIRES, HAS IRREGULAR RUNNING CONDITION:~
1. High tension lead wire shorting out
1. Replace complete ignition coil
2. Fouled or incorrect spark plugs
2. Replace spark plugs or install spark
(Heat range too hot)
plugs having cooler heat range
3. Air leak between intake manifold and
3. Check carburettor manifold
cylinders
rubbers for perishing
4. Air leak between intake manifold and
4. Install new intake manifold gaskets
cylinders
5 Jets – incorrect or incorrectly installed
5. Fit correct jets
ENGINE STOPS SUDDENLY AFTER RUNNING :~
1. Defective C.D unit / coil
1. Replace
2. Obstruction in fuel tank or fuel filter
2. Clean fuel tank (should be done
regularly) or replace fuel filter
3. Fuel line obstructed or pinched
3. Remove obstruction or remove pinches
in fuel line
4. Spark plug bridged
4. Replace spark plug
5. Seized piston(s)
5. Replace piston and any affected
components
6. Seized crankshaft
6. Replace crankshaft and any
affected components