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Yes Next step 12 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 14 Yes Replace the pressure regulator 13 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 14 Check if there is leaking or jam in oil intake pipe.
No Replace oil pump Yes Repair or replace oil return pipe 15 Check if the oil return pipe is bended or jammed.
No Replace the pressure regulator Yes Next step 16 Check if leak and blocking exist in air intake system and if air flow meter works normally. No Replace the sensor Yes Next step 17
Check if spark plug, ignition cable and ignition coil are normal. No Replace or adjust Yes Check A/C system 18 Check if it results from air conditioning system. No Replace ECU
Note: Poor acceleration of system relates to many factors, such as problem in mechanical part of the engine itself, cylinder pressure and carbon deposit on valve etc. In addition, it is also in connection with other systems, such as power steering system and A/C system.
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