Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Inspect for any kinked exhaust pipes. Did you find any kinked exhaust pipes? | -- | ||
2 | Repair or replace the exhaust pipes as necessary. Does excessive back pressure continue? | -- | System OK | |
3 | Remove the muffler and visually check for restrictions. Did you find any restrictions in the muffler? | -- | ||
4 | Replace the muffler. Refer to Muffler Replacement . Does excessive back pressure continue? | -- | System OK | |
5 | Inspect for a crimped tail pipe or an obstruction in the tail pipe. Is the tail pipe crimped or obstructed? | -- | ||
6 | Remove the obstruction or straighten the crimp in the tail pipe. If the tail pipe is damaged, replace the muffler/tail pipe assembly. Refer to Tail Pipe Replacement . Is the exhaust system still restricted? | -- | System OK | |
7 | Inspect for a plugged three way catalytic converter. Is the three way catalytic converter plugged? | -- | -- | |
8 | Refer to Restricted Exhaust System Check or Restricted Exhaust System Check in Engine Controls in order to diagnose the cause of the restriction. Is the exhaust system still restricted? | -- | -- | System OK |
