![]() ![]() The vehicle computer uses this information to adjust the amount of fuel entering the engine. Malfunctioning Oxygen Sensors: Oxygen sensors measure how rich or lean the exhaust gases are when they leave the vehicles combustion chamber. Eventually the car will not start at all as the catalytic converter becomes totally blocked. This leads to the strong rotten egg smell. ![]() When a converter starts to fail, it isn’t able to burn off the hydrocarbons in the exhaust, and is no longer breaking down the sulfur created by the engine. In most cases, the Check Engine light will trigger as well. Failing to do this in a timely manner can damage the exhaust manifold which is a much more expensive repair.įailing Catalytic Converter: If the engine is sputtering, running rough and has a smell of rotten eggs it is probably due to a failing catalytic converter. Gaskets and seals wear down over time and will eventually have to be replaced. Worn Seals or Gaskets: There are a number of gaskets and seals in the exhaust system and if any of them are failing it can create a rough or sputtering engine. It can also lead to exhaust fumes making their way into the car cabin. A cracked or leaking exhaust manifold can create dangerous driving condition as the escaping hot gases can melt nearby plastic components. This condition can also cause the Check Engine light to trigger as well as present increased engine noise and poor performance from the engine. Leak in Exhaust Manifold: A leak in the exhaust manifold, which collects exhaust gases, can cause the engine to sputter or run unevenly. This mixture is then compressed in the engine cylinder and then ignited which produces the energy which moves the pistons. This happens in the engine intake system. Fuel is mixed with air, atomized and vaporized. The fuel system is responsible for storing and supplying fuel to the car to drive the engine. The gases exit the catalytic converter into the muffler, which reduces the noise levels of the engine, and finally the exhaust fumes exit the vehicle at the tail pipe. The catalytic converter removes the harmful elements of the gases such as carbon monoxide and hydrogen monoxide, converting them into inert gases. The gases are then released through the front pipe where they travel to the catalytic converter. The exhaust system collects exhaust gases from the cylinder head via the exhaust manifold, which acts as a funnel diverting exhaust gases away from the cylinders. Here are two of the more common ones, the exhaust and fuel system. Service type Engine is sputtering InspectionĪ sputtering engine can have its root cause located in a number of different systems. ![]()
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