Causes of Spark Knock

Causes of Spark Knock Points : causes of spark knock, engine noise analysis, problems in internal combustion engines, ic, engine, auto diesel 1. Low octane fuel
2. Large carbon deposits in combustion chamber
3. Ignition timed too early
4. Excessively lean fuel mixtures
5. Weak automatic distributor advance weight springs
6. Automatic heat control valve stuck in closed position
7. Too hot a spark plug
8. Spark plug porcelain burned
9. Sharp metallic edges in combustion chamber
10. Cylinder head gasket projecting in combustion chamber
11. Overheated valves resulting from
12. Too narrow valve seats
13. insufficient tappet clearance
14. Thin-edged valves excessive engine temperatures loose fan belt