Check Contamination ,Gasket installation as follows

▶ Damage or installation of throttle body gasket.

▶ Check clog of air cleaner

▶ Clog or contamination of intake manifold or injectors caused by foreign materials

▶ Check vaccum hose connected to surge tank is normal.

Has a problem been found ?

YES

▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair"procedure.

NO

▶ Go to "Check Fuel Pressure" as follows

Refer to "Fuel pressure test" in "Fuel delivery system"

Is the measured fuel pressure within specification ?

YES

▶ Go to "Component Inspection"procedure.

NO

▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.