Check Air Leakage
- Visually/physically inspect the air leakage in intake/exhaust system for following items
- Vacuum hoses for splits, kinks and improper connections.
- Throttle body gasket.
- 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.
- Has a problem found in this procedure?
YES
- Repair or replace it which has a problem, and go to "Verification of Vehicle Repair " procedure.
NO
- Go to "Check the fuel line" as follows.