TN’G 150cc - Knocking Sound in Cylinder

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ii.Spark Plug OK – Check Carburetor
4. Carburetor
i. Carburetor Defective
a. Blocked idle jet – Clean jet
b. Dirty float bowl – Clean bowl
c. Low fuel in bowl – Adjust bowl
ii.Carburetor OK
a. Engine overheated – Check & replace lubricating
oil
b. Air inlet system blocked or leaky – Remove
blockage or leak
KNOCKING SOUND IN CYLINDER
Causes Solutions
1. Engine Overheating Check & replace lubricating oil
2. Spark Plug Defective Replace the spark plug
3. Ignition Timing Too Early Adjust ignition timing
4. Carbon Build-Up
i. In Cylinder Remove carbon build-up
ii. In Exhaust Pipe & Muffler Remove carbon build-up