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6 CHECK IGNITION SPARK 1. Turn Ignition switch “OFF”. SEF575Q OK or NG OK © GO TO 7. NG © Check ignition coil, power transistor and their circuits. Refer to EC-QG-323. 7 CHECK SPARK PLUGS Remove the spark plugs and check for fouling, etc. SEF156I OK or NG OK © GO TO 8. NG © Repair or replace spark plug(s) with standard type one(s). For spark plug type, refer to 8 CHECK COMPRESSION PRESSURE Refer to EM section. I Check compression pressure. Standard: 1,324 kPa (13.24 bar, 13.5 kg/cm 2 , 192 psi)/350 rpm Minimum: 1,128 kPa (11.28 bar, 11.5 kg/cm 2 , 164 psi)/350 rpm Difference between each cylinder: 98 kPa (0.98 bar, 1.0 kg/cm 2 , 14 psi)/350 rpm OK or NG OK © GO TO 9. NG © Check pistons, piston rings, valves, valve seats and cylinder head gaskets. DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MISFIRE QG16 I 18DE Diagnostic Procedure (Cont’d) EC-225 |