Check for leaks at the exhaust manifold or the exhaust pipe connections.

Are there leaks at the exhaust maniifold or the exhaust pipe connections?

--

Go to Step 2

Go to Step 3

Tighten the clamps at the leaking connections to the correct specifications. Refer to Fastener Tightening Specifications .

Has the leakage stopped?

--

System OK

Go to Step 3

Check for a burned or blown-out muffler.

Is either of the mufflers burned or blown out?

--

Go to Step 4

Go to Step 5

1. Replace the muffler. Refer to Muffler .
2. Check the engine performance.

Are there still exhaust noises?

--

System OK

Go to Step 5

Check the exhaust pipe at the exhaust manifold flange.

Is the exhaust pipe leaking?

--

Go to Step 6

System OK

1. Replace the exhaust manifold as necessary. Refer to Exhaust Manifold Replacement in Engine Mechanical.
2. Tighten the retaining bolts to specifications. Refer to Fastener Tightening Specifications .

Are there still exhaust noises?

--

Go to Step 7

System OK

Check to see if the exhaust manifold is cracked or broken.

Is the exhaust manifold cracked or broken?

--

Go to Step 8

Go to Step 9

Repair or replace the exhaust manifold as necessary. Refer to Exhaust Manifold Replacement in Engine Mechanical.

Are there still exhaust noises?

--

Go to Step 9

System OK

Check for a leak between the exhaust manifold and the cylinder head.

Is there a leak between the exhaust manifold and the cylinder head?

--

Go to Step 10

System OK

Tighten the bolts between the exhaust manifold and the cylinder head to specifications. Refer to Fastener Tightening Specifications in Engine Mechanical.

Are there still exhaust noises?

--

--

System OK