Accurate Auto can replace the exhaust manifold in your automobile when it goes bad. This is the first part in your vehicle’s exhaust system. It is connected to the engine block. When the engine forces the exhaust out of the cylinders, the manifold collects the gases and pushes them into the catalytic converter where they are treated. Here are signs your exhaust manifold is bad.
Strange Noises
The exhaust manifold can crack itself or exhaust can start leaking out of the manifold gasket. When this happens, you will hear loud rattling or tapping when you fire up your automobile. These noises are continuous as the exhaust escapes from the manifold, but they are most noticeable at start-up. In some cases, the manifold may close the crack while your engine is running by expanding as it heats up.
Burning Plastic
Another sign that the manifold or manifold gasket is leaking is the smell of burning plastic coming from the engine. This is an indication that hot exhaust is escaping into the engine and melting plastic engine parts. It can also melt rubber parts. Your engine may also overheat if there is hot exhaust in it.
Check Engine Warning
The engine control unit may turn on the check engine light because the oxygen sensor reports an error. If the manifold is cracked, excess air will be introduced into the exhaust. This added air can trick the oxygen sensor as it measures the air level in the exhaust. It will send an error code to the engine control unit that the engine is running lean when it actually isn’t. The unit will turn on the CEL.
Engine Performance Problems
Consequently, the engine control unit may also make unnecessary changes to the air and fuel in the combustion chamber that will affect your engine’s performance. It may add extra fuel to the mix because it thinks the mix is lean. This will cause your engine to surge and pick up speed. Naturally, the excess fuel will also reduce your vehicle’s fuel economy and increase the exhaust emissions.
Noticeable Exhaust Odors
Finally, you may start to smell exhaust odors in your vehicle’s cabin because the leaking manifold or gasket is introducing exhaust into the engine. The heating or cooling system may pick up this exhaust and push it through the vents. Do not drive your vehicle if you can smell its exhaust.
Accurate Auto is the best auto service in Tigard, OR. We also have the best shops in Beaverton, Lake Oswego, and Hillsboro. Call us today if you believe your exhaust manifold is leaking.