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How Often Does the Exhaust Manifold Crack?

Vielhaber’s Garage advises that it is rare for the exhaust manifold to crack. In fact, the exhaust manifold gasket doesn’t crack that often, either. Heat is the main reason why the manifold or gasket will crack, so if you’re driving your vehicle when the engine is overheating, you are at a higher risk of ending up with exhaust manifold and/or gasket damage. Here are signs that you’ve got this exact problem.

Poor Engine Performance

The exhaust manifold accepts the exhaust from the combustion chamber and pushes it into the catalytic converter. If the manifold or gasket is cracked, the exhaust gases will waft into the engine. When this happens, the engine’s performance lags. This can be frustrating, especially if you need to pick up speed quickly. Unfortunately, your vehicle will seem slower and more sluggish than it normally is.

Reduced Fuel Economy

The poor engine performance will also cause a reduction in your automobile’s fuel economy. This is because the engine will burn through more fuel as it tries to produce power when you press down on the accelerator. This can hit your budget pretty hard if the fuel economy really tanks – pun intended.

Burning Engine Smells

The exhaust that makes its way into the engine is scorching hot. Consequently, it will melt rubber and plastic engine parts. You will smell these parts melting away. You will also smell hot metal as the exhaust heats up the metal. Your engine will also overheat every time that you drive your automobile.

Strong Exhaust Odors

Another odor that isn’t normal is the odor of the exhaust itself. As the exhaust fills the engine, it can be picked up by your car’s air conditioner or heater and blow through the vents. This can make driving your vehicle extremely dangerous as you are inhaling exhaust while you are operating the automobile

Hissing or Tapping Noises

You may also be able to hear the exhaust leak when you first fire up your vehicle. Depending on the size of the crack in the manifold or manifold gasket, you will hear hissing or tapping coming from the engine. This noise will stop when the engine has heated up and the manifold has expanded to close the crack.

Check Engine Warning

Finally, your vehicle’s engine control unit will turn on the check engine light to alert you that there’s a problem in the engine. In this case, the problem is the leak in the exhaust manifold or manifold gasket.

Vielhaber’s Garage in Findlay, OH, would be happy to help, so call us today.

Photo by Phantom1311 from Getty Images via Canva Pro