The exhaust manifold rarely cracks, but when it does, you will start to have problems with your automobile. The number one enemy of the exhaust manifold is heat. If you are driving your vehicle when the engine is running too hot, you can overheat the manifold and cause it or the exhaust manifold gasket to crack. You will find the signs of a cracked exhaust manifold below.
Issues With Engine Performance
One of the first things that will happen is you will start to have problems with how your engine performs. The engine will start to lag and sputter, especially when you accelerate and when you drive at faster speeds. The reason why is that the exhaust is leaking into the engine and inhibiting combustion.
Noticeable Reduction in Gas Mileage
You would think that if the engine is lagging, it would use as much gas. Unfortunately, the opposite occurs. The engine will use more gasoline or diesel fuel if it is struggling to produce combustion. Consequently, you will notice a significant reduction in your vehicle’s fuel economy.
Popping, Hissing, or Tapping Noises
A sign of a cracked exhaust manifold that is easy to notice is strange noises in the engine when you fire it up. The sound that the exhaust makes as it leaks out of the manifold is usually popping, hissing, or tapping. If you hear any of these noises, drive straight to our shop.
Strong, Burning Engine Odors
We mentioned above that the exhaust leaks into the engine when the manifold cracks. It also leaks into the engine when the gasket cracks. Consequently, the exhaust is hot so it will heat up the engine and all of its parts. This can cause your engine to overheat and strong, burning odors.
Noticeably Strong Exhaust Odors
You might also start to smell the exhaust inside your automobile. The ventilation system may pick up some of the exhaust and push it through the vents. As you know, inhaling exhaust is dangerous and deadly. If you can smell your vehicle’s exhaust, avoid driving your automobile.
Illuminated Check Engine Warning
Finally, the engine control module cannot repair a leaking exhaust manifold. As such, it will turn on the check engine light because the manifold and gasket do not have lights of their own. The check engine light will remain illuminated until we replace the leaking exhaust system part.
As you have learned, continuing to drive your automobile with a leaking exhaust manifold can be dangerous to your health and cause serious engine problems. Stop by our shop today so we can check the manifold and gasket to make sure they are intact.
