Check clog on Exhaust gas system
Key "OFF".
Check clog on muffler or catalyst converter.
Is Exhaust gas system O.K. ?
YES
Go to "Intake air system check" procedure.
NO
Repair as necessary and go to "Verification of vehicle Repair" procedure.
Intake air system check
Check leakage on Intake air system
▶ Check clog of air-cleaner.
▶ Check deterioration or contamination on throttle body and gasket.
▶ Check contamination, damage, stuck or clog on intake manifold, hoses, PCSV, ISCA and injectors.
Is there any problem?
YES
Repair as necessary and go to "Verification of vehicle Repair" procedure
NO
Go to "Fuel line pressure check" procedure.
Fuel line pressure check
Key "OFF".
Disconnect a fuel pump relay.
Engine start and wait until engine stop. and then key "OFF".
Connect a fuel pump relay.
Connect a fuel pressure guage to a fuel filter by a fuel pressure guage adaptor.
Engine start and measure a fuel pressure.
Specification : Approx. 3.5㎏/㎠
Is the fuel pressure normal?
YES
Go to "Component inspection" procedure.
NO
Check clog or stuck of the valve in a fuel pressure regulator.
Check the supply pressure of fuel pump.
Repair as necessary and go to "Verification of vehicle Repair" procedure
