Visually/physically inspect the air leakage in intake/exhaust system as following items,
- Check for throttle Plate being held open with excessive carbon deposits
- Vacuum hoses for splits, kinks and improper connections.
- Throttle body gasket
- Positive crankcase ventilation valve for improper installation, damaged o-rings and malfunctioning .
- Gasket between intake manifold and cylinder head
- Seals between intake manifold and fuel injectors
- Exhaust system between HO2S and Three way catalyst for air leakage
Was a problem found in any of the above areas?
![]() | ▶ Replace or repair as necessary and go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Go to next step as below. |