System Inspection

System Inspection

Check for Restricted Intake or Exhaust System
1. Visually/physically inspect the following items:
-Air cleaner filter element for excessive dirt or for any foreign objects
-Throttle body inlet for damage or for any foreign objects
-Restricted exhaust system
2. Was a problem found in any of the above areas ?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) Go to "Air Leakage Inspection" procedure.
Air Leakage Inspection
1. Visually/physically inspect the air leakage in intake/exhaust system as following items,
If OK, go to next step
If NG, repair as necessary and go to "Verification of Vehicle Repair" procedure
- 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
2. Check for air leakage in EVAP. Purge control valve
(1) Remove the manifold side vacuum hose from the EVAP canister purge valve.
(2) Using a hand vacuum pump apply specified vacuum (Approx. 15 in, Hg) to the manifold side of the valve
(3) Does the valve hold vacuum ?
YES
1) Go to "W/harness Inspection" procedure
NO
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure