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No 17 Yes Next step 12 Check if the fuel pressure value is below 300 kPa.
No 16 Yes Next step 13 Close the fuel manometer valve. Re-engage the ignition switch to let the fuel pump run for a period of time, and then check if fuel pressure can be built up. No 15 Yes Check fuel pressure regulator and fuel pump 14 Open the valve of fuel gauge and clamp the oil return pipe by oil return baffle so that the oil can not return. Check if the oil pressure occurs immediately. No Repair and replace fuel injector and oil pipe Yes Repair or replace oil intake pipe 15 Check if the oil intake pipe is leaky or jammed. No Replace oil pump Yes Repair or replace oil return pipe 16 Check if the oil return pipe is bended or jammed. No Replace fuel pressure regulator or fuel pump Yes Next step 17 Check if the pressure of cylinder is normal. No Troubleshooting Yes Repair 18 Check if the engine air intake system is leaky.
No Next step Yes Repair or replace 19 If air cleaner or airflow sensor is choked. No Replace ECU
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