*CHECKING THE EXHAUST SYSTEM FOR LEAKS
1.CHECKING THE EXHAUST SYSTEM FOR LEAKS
WARNING: The normal operating temperature of the exhaust system is very high. Never work around or attempt to service any part of the exhaust system until it has cooled. Special care should be taken when working near the catalytic converter. The temperature of the converter rises to a high level after a short period of engine operating time
CAUTION: The air pressure must not exceed 27.6 kPa (4 psi), otherwise engine damage can occur.
Type 1 Leak
Type 2 Leak
| Leak Location | Repair required if results at 27.6 kPa (4 psi) reveal bubble size: |
| Welded joints | Type 1, 1 mm (0.04 of an inch) or greater |
| O2 Sensor seal points | Type 1, 1 mm (0.04 of an inch) or greater |
| O2 Sensor boss welds | Type 1, 1 mm (0.04 of an inch) or greater |
| Flange / joint connections | Type 2, 8 mm (0.3 of an inch) or greater |
| Exhaust Manifold to cylinder head connections | Type 2, 8 mm (0.3 of an inch) or greater |
| EGR gasket and tube seal points | Type 2, 8 mm (0.3 of an inch) or greater |
Were any exhaust leaks found?
Yes
- Repair or replace the leaking exhaust parts as necessary.
- Perform the PCM Verification Test. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
- Test complete.