Can a bad exhaust gasket cause leak in exhaust?

Yes, a bad exhaust gasket can cause a leak in the exhaust system. Exhaust gaskets are used to seal the joints between different components of the exhaust system, such as the exhaust manifold and the exhaust pipe. If a gasket is damaged or worn out, it can create a gap that allows exhaust gases to escape. This can cause a number of problems, including:

* Decreased engine performance

* Increased fuel consumption

* Loud exhaust noise

* Bad smell in the cabin

A bad exhaust gasket can also cause premature wear on other components of the exhaust system, such as the catalytic converter and the oxygen sensor. If you suspect that you have a bad exhaust gasket, it is important to have it inspected and replaced as soon as possible.