GASKET 4592650 - Caterpillar

Probable Causes
Incorrect ignition timing
Incorrect maintenance of the spark plugs
High compression ratio
Excessive load
Air/fuel ratioRecommended Repairs
Ignition Timing
Note: Data from a fuel analysis is required for this procedure.Use the Digital Diagnostic Tool (DDT) or the Caterpillar Electronic Technician (ET) to check for the correct desired ignition timing. Compare the timing to the recommended timing in the Engine Performance, "Fuel Usage Guide".Adjust the ignition timing according to the recommended timing in the Engine Performance, "Fuel Usage Guide".Spark Plug
Maintain the spark plug according to the engine's Operation and Maintenance Manual.Cylinder Compression
Deposits in the cylinder can increase the compression ratio.Measure the cylinder compression. Refer to the engine's Operation and Maintenance Manual, "Cylinder Pressure - Measure/Record".Excessive Load
Higher loads reduce the service life of spark plugs. Determine whether the engine has been operating beyond the recommended rated load.Air/Fuel Ratio
A lean air/fuel ratio will cause a higher spark demand in order to ignite. The higher spark demand will reduce the service life of a spark plug.