An exhaust leak can definitely cause rough idle if the leak is located before the upstream o2 sensor or very close to it The exhaust leak will set off a false lean condition, to which the ecu responds by increasing fuel delivery. When you have a rough idle situation and it's being attributed to an exhaust leak, it is more likely that the reason for a rough idle caused the exhaust leak In order to understand this, it is important to know that a catalytic converter operates at a thousand degrees or more. Leaks in the exhaust pipe can disrupt the airflow and cause abnormal sensor readings, leading to rough idling Use a flashlight to check the pipe thoroughly, paying close attention to any visible cracks, holes, or signs of corrosion.
Yes, a bad exhaust can cause rough idle by disrupting engine backpressure and airflow Engine performance and idle stability may suffer as a result A vehicle’s exhaust system is crucial for directing harmful gases away from the engine and maintaining proper engine function. A muffler with holes or cracks can cause exhaust gases to escape prematurely, disrupting the engine’s performance If you have a rough idle, check for an exhaust leak An exhaust leak can be hard to find and difficult to fix, but it’s worth finding out if it’s the source of your problems.
Can an exhaust manifold leak cause a rough idle The answer is, unfortunately, yes An exhaust manifold leak can cause all sorts of problems with your engine, and a rough idle is just one of them.
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