Inspect the exhaust pipes.

Are the pipes bent?

--

Go to Step  2

Go to Step  3

Repair or replace the exhaust pipe(s) as needed.

Is the exhaust system still restricted or exhibit excessive back pressure?

--

Go to Step  3

System OK

Inspect the muffler/resonator.

Is there a restriction in the muffler/resonator?

--

Go to Step 4

Go to Step  5

1. Remove the muffler/resonator.
2. Inspect the muffler/resonator forrestrictions.
3. Replace the muffler/resonator if needed. Refer to Muffler Replacement .

Is the exhaust system still restricted or exhibit excessive back pressure?

--

Go to Step  5

System OK

Inspect the tailpipe end.

Is there an obstruction in the tailpipe end?

--

Go to Step  6

Go to Step  7

1. Remove the obstruction.
2. Replace the muffler/tailpipe if either is damaged. Refer to Muffler Replacement .

Is the exhaust system still restricted or exhibit excessive back pressure?

--

Go to Step 7

System OK

Inspect the catalytic converter.

Is the catalytic converter plugged?

--

Go to Step  8

--

1. Remove the obstruction.
2. Replace the converter if damaged. Refer to Muffler Replacement .

Is the exhaust still restricted or exhibit excessive back pressure?

--

--

System OK