Exhaust Leakage - Not OBD II Pontiac/Buick
Step | Action | Values | Yes | No |
|---|---|---|---|---|
1 | Check for improperly installed or misaligned components. Are there any improperly installed or misaligned components? | -- | ||
2 | Align the components and tighten the connections to specifications. Refer to Fastener Tightening Specifications . Is there still exhaust leakage and/or excess noise? | -- | System OK | |
3 | Check for loose connections at the exhaust manifold or the three way catalytic converter. Are there any loose connections at the exhaust manifold or the three way catalytic converter? | -- | ||
4 | Tighten all fasteners to specifications. Refer to Engine Mechanical. Is there still exhaust leakage and/or excess noise? | -- | System OK | |
5 | Check for a cracked or broken exhaust manifold. Is the exhaust manifold cracked or broken? | -- | ||
6 | Replace any cracked or broken exhaust manifolds. Refer to Engine Mechanical. Is there still exhaust leakage and/or excess noise? | -- | System OK | |
7 | Check for any leakage at the crossover pipe connection. Is there any leakage at the crossover pipe connection? | -- | ||
8 | Tighten the nuts and bolts to specifications. Refer to Fastener Tightening Specifications . Is there still exhaust leakage and/or excess noise? | -- | System OK | |
9 | Check for any damaged or worn seals. Are there any damaged or worn seals? | -- | ||
10 | Replace any damaged or worn seals. Is there still exhaust leakage and/or excess noise? | -- | System OK | |
11 | Check for a burned or rusted extension pipe. Is there a burned or rusted extension pipe? | -- | ||
12 | Replace the extension pipe (and muffler assembly if not previously serviced). Is there still exhaust leakage and/or excess noise? | -- | System OK | |
13 | Check for a burned or rusted muffler. Is there a burned or rusted muffler? | -- | ||
14 | Replace the muffler/tail pipe assembly. Refer to Muffler or to Tail Pipe . Is there still exhaust leakage and/or excess noise? | -- | System OK | |
15 | Check for leakage at the exhaust component joints or couplings, if previously serviced. Is there any leakage at the exhaust component joints or couplings? | -- | -- | |
16 | Replace the seals and tighten the flange bolts to specifications. If necessary, weld the joint where leakage is present. Refer to Fastener Tightening Specifications . Is there still exhaust leakage and/or excess noise. | -- | -- | System OK |
Exhaust Leakage - Not OBD II Chevrolet/Oldsmobile
Step | Action | Values | Yes | No |
|---|---|---|---|---|
1 | Check for improperly installed or misaligned components. Are there any improperly installed or misaligned components? | -- | ||
2 | Align the components and tighten the connections to specifications. Refer to Fastener Tightening Specifications . Is there still exhaust leakage and/or excess noise? | -- | System OK | |
3 | Check for loose connections at the exhaust manifold or the three way catalytic converter. Are there any loose connections at the exhaust manifold or the three way catalytic converter? | -- | ||
4 | Tighten all fasteners to specifications. Refer to Engine Mechanical. Is there still exhaust leakage and/or excess noise? | -- | System OK | |
5 | Check for a cracked or broken exhaust manifold. Is the exhaust manifold cracked or broken? | -- | ||
6 | Replace any cracked or broken exhaust manifolds. For the 3.1 L engine, refer to Engine Mechanical. For the 3.4 L engine, refer to Engine Mechanical. Is there still exhaust leakage and/or excess noise? | -- | System OK | |
7 | Check for any leakage at the crossover pipe connection. Is there any leakage at the crossover pipe connection? | -- | ||
8 | Tighten the nuts and bolts to specifications. Refer to Fastener Tightening Specifications . Is there still exhaust leakage and/or excess noise? | -- | System OK | |
9 | Check for any damaged or worn seals. Are there any damaged or worn seals? | -- | ||
10 | Replace any damaged or worn seals. Is there still exhaust leakage and/or excess noise? | -- | System OK | |
11 | Check for a burned or rusted extension pipe. Is there a burned or rusted extension pipe? | -- | ||
12 | Replace the extension pipe, and muffler assembly if not previously serviced. Is there still exhaust leakage and/or excess noise? | -- | System OK | |
13 | Check for a burned or rusted muffler. Is there a burned or rusted muffler? | -- | ||
14 | Replace the muffler/tail pipe assembly. Refer to Muffler . Is there still exhaust leakage and/or excess noise? | -- | System OK | |
15 | Check for leakage at the exhaust component joints or couplings, if previously serviced. Is there any leakage at the exhaust component joints or couplings? | -- | -- | |
16 | Replace the seals and tighten the flange bolts to specifications. If necessary, weld the joint where leakage is present. Refer to Fastener Tightening Specifications . Is there still exhaust leakage and/or excess noise. | -- | -- | System OK |
