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tube clamp to stop the fuel return in order No Repair or replace the fuel injector or the fuel pipe. Yes Repair or replace the fuel air inlet pipe. 12 Verify that the fuel inlet pipe has any No Replace the fuel pump. Yes Repair or replace the fuel return pipe. 13 Verify that the fuel return pipe has any No Replace the fuel pressure regulator. Yes Proceed to next step. 14 Run the engine at idle speed until the No Adjust the ignition advance angle. Yes Replace the coolant 15 Disconnect the coolant temperature sensor No Proceed to next step. Yes Proceed to next step. 16 Verify that the compression pressure of No Fix the malfunction. Yes Proceed to next step. 17 Verify that the resistance of each cylinder No Replace Yes Replace 18 Verify that the ignition coil and high No Proceed to next step. Yes Replace the ECU. 19 Verify that the spark plug is normal. No Replace the spark plug.
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