System Inspection

P2178 System Too Rich Off Idle

Inspection/Repair - System Inspection

System Inspection

1. Air clog check
(1) Check "Air intake system"
> Check clog of air-cleaner.
> Check deterioration or contamination on throttle body and gasket.
> Check contamination, damage, stuck or clog on intake manifold, PCSV, ISCA and injectors.
(2) Is there any problem?
YES
1) Repair as necessary and go to "Verification of vehicle Repair" procedure
NO
1) Go to "Fuel pressure check" procedure.
2. Fuel line pressure check
(1) Key "OFF".
(2) Fuel pump relay.
(3) Engine start and wait until engine stop. and then key "OFF".
(4) Install fuel pump relay.
(5) Connect fuel pressure gauge using the correct adapter.
(6) Start the engine and record fuel pressure.
A. Specification : Approx. 3.5 kg/cm2 (343.2 kPa, 50 psi)




(7) Is the fuel pressure normal?
YES
1) Go to "Component inspection" procedure.
NO
1) Check the supply pressure of fuel pump.

Repair as necessary and go to "Verification of vehicle Repair" procedure