Repair 7

How to Troubleshoot the Exhaust System in a Toyota Camry

A good way to handle problems with your Camry exhaust system is to tackle the culprit. Exhaust system difficulties could develop from several causes, so inspect devices from the engine to the tailpipe. Troubleshoot the exhaust system in a Toyota Camry by recognizing warning signs from exhaust system components. Work with a mechanic on the steps below that relate to most model years.

Instructions

1

Check the exhaust manifold and cylinder head. Leaks usually occur where these devices connect because of heat expansion and contraction. Shear stress affects the exhaust manifold gasket every time you crank up your Camry, drive it or turn it off. Leaks can result as time passes.

2

Listen for hissing or popping sounds occurring intermittently when the engine runs. See if you spot paint discolorations or burns around the exhaust ports on the cylinder head. Make certain to inspect your spark plug wires and boots for burns.

3

Inspect the area that joins the head pipe and exhaust manifold. The back-and-forth motion of your engine caused by drive torque leads to movement at the joint where the head pipe and exhaust manifold meet. Look for discoloration from hot gases that escaped this area. This pertains to the 4-cylinder and 6-cylinder engines.

4

See if the exhaust pipes suffer wear. Take large pliers and put pressure on the pipes. Replace all pipes that break, tear or give way to pressure. Keep the engine on while you test the system because leaks and other problems are more obvious with a live engine.

5

Determine if sounds come from exhaust areas around your muffler. Buzzing sounds that increase with acceleration for example, are a sign of exhaust system problems. A whistle or high-pitched hissing noise in the tailpipe could come from system restrictions. Ask a mechanic to read your engine intake manifold vacuum. Low readings indicate blockage.