25
Condition Probably cause Corrective action
Ignition system out of Disconnection of high tension cable. Replace.
order Loose connection or disconnection in primary Repair or replace.
circuit.
Fuel system out of order Lack of fuel Supply.
Dirty fuel filter. Replace.
Dirty or clogged fuel pipe. Clean.
Improper idling Adjust.
Dirty or clogged injector. Replace or clean injector.
Clogged breather pipe of fuel tank. Repair and clean.
Low compression Incorrect spark plug tightening or faulty gasket. Tighten to normal torque or replace gasket.
Improper grade engine oil or low viscosity. Replace with proper grade oil.
Incorrect valve clearance. Adjust.
Compression leak from valve seat. Remove cylinder head and lap valves.
Sticky valve stem. Correct or replace valve and valve guide.
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