Chart 14-Spark Knock (Pings)

DIAGNOSTIC CHART 14-SPARK KNOCK (PINGS)

System & Component(s)	Reference
IGNITION Timing	See ADJUSTMENTS article.
EEC EEC-IV Quick Test	See TESTS W/CODES article.
COOLING Overheating	Check cooling system.
BASE ENGINE Oil Level Compression Check Intake Manifold Gasket	Check Engine Mechanical Condition.
FUEL/THROTTLE BODY Fuel Filter Fuel Pump Fuel Lines Fuel Pressure Regulator Fuel Sender Filter Injectors	Perform a visual inspection. See FUEL SYSTEMS in I - SYS/COMP TESTS article.
PCV Valve	See I - SYS/COMP TESTS article.
EGR Verify Correct Application, then Diagnose	See I - SYS/COMP TESTS article.
AIR INTAKE SYSTEM Air Cleaner Duct & Element	See I - SYS/COMP TESTS article.
THERMACTOR Thermactor System Components	See I - SYS/COMP TESTS article.
BASE TRANSMISSION (E4OD, AODE, AXOD-E) Transmission Controls	See TESTS W/CODES article.