IG KEY "OFF".

Check clog on muffler or catalyst converter.

Is Exhaust gas system O.K. ?

	▶ Go to "Intake air system check" procedure.
	▶ Repair as necessary and go to "Verification of vehicle Repair" procedure.

Check leakage on Intake air system

▶ Check looseness, deterioration or contamination on throttle body and gasket.

▶ Check contamination, damage or crack on intake manifold, ISCA and injectors.

▶ Check for contamination or sticking on the ISCA assembly.

Is there any leakage?

	▶ Repair as necessary and go to "Verification of vehicle Repair" procedure.
	▶ Go to "Fuel line check" procedure.

IG KEY "OFF".

Disconnect a fuel pump relay.

Engine start and wait until engine stop. and then IG 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.

Is the fuel pressure normal?

	▶ Go to "Component inspection" procedure.
	▶ 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.