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EC-396 < DTC/CIRCUIT DIAGNOSIS > [QR25DE] P117A AIR FUEL RATIO 10. Allow a 13-17mm (0.52-0.66 in) spacing between spark plug and grounded metal portion as shown in the figure to fix the ignition coil with a rope or an equivalent. 11. Crank the engine for approximately 3 seconds to see if sparking occurs between spark plug and the grounded metal portion. CAUTION: • The discharge voltage becomes 20 kV or higher. There- fore, always stay away from the spark plug and ignition coil at least 50 cm (19.7 in) during the inspection. • Leaving a space of more than 17mm (0.66 in) may damage the ignition coil. NOTE: When the gap is less than 13 mm (0.52 in), a the spark might be generated even if the coil is mal- functioning. Is the inspection result normal? YES >> GO TO 9. NO >> GO TO 11. 9. CHECK COMPRESSION PRESSURE Check compression pressure. Refer to Is the inspection result normal? YES >> GO TO 14. NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets. 10. DETECT MALFUNCTIONING PART Check fuel hoses and fuel tubes for clogging. YES >> Replace fuel filter and fuel pump assembly. Refer to FL-5, "Removal and Installation" NO >> Repair or replace error-detected parts. 11. CHECK FUNCTION OF IGNITION COIL-2 1. Turn ignition switch OFF. 2. Disconnect spark plug and connect a non-malfunctioning spark plug. 3. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark plug and the grounded metal portion. Is the inspection result normal? YES >> GO TO 12. NO >> Check ignition coil, power transistor and their circuits. Refer to . 12. CHECK SPARK PLUG Check the initial spark plug for fouling, etc. YES >> 1. Repair or clean spark plug. Refer to 2. GO TO 13. NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to . 13. CHECK FUNCTION OF IGNITION COIL-3 Spark should be generated. JMBIA0066GB Spark should be generated. SEF156I |