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7 CHECK SPARK PLUGS Remove the spark plugs and check for fouling, etc. SEF156I OK or NG OK © GO TO 9. 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: 1,226 kPa (12.26 bar, 12.5 kg/cm 2 , 178 psi)/300 rpm Minimum: 1,030 kPa (10.30 bar, 10.5 kg/cm 2 , 149 psi)/300 rpm Difference between each cylinder: 98 kPa (0.98 bar, 1.0 kg/cm 2 , 14 psi)/300 rpm OK or NG OK © GO TO 10. NG © Check pistons, piston rings, valves, valve seats and cylinder head gaskets. 9 CHECK FUEL PRESSURE 1. Install any parts removed. SEF194X At idle: Approx. 235 kPa (2.35 bar, 2.4 kg/cm 2 , 34 psi) OK or NG OK © GO TO 12. NG © GO TO 11. Fuel filter DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MISFIRE SR20DE Diagnostic Procedure (Cont’d) EC-227 |