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Will your car smoke if catalytic converter is bad?

A bad catalytic converter can cause a car to smoke, but it is not the only cause of smoking. Other potential causes include:

* Engine oil leaks: If engine oil leaks onto the exhaust manifold, it can burn and produce smoke.

* Coolant leaks: If coolant leaks onto the exhaust manifold, it can also burn and produce smoke.

* Transmission fluid leaks: If transmission fluid leaks onto the exhaust manifold, it can also burn and produce smoke.

* Worn piston rings: Worn piston rings can allow oil to leak into the combustion chamber, which can then burn and produce smoke.

* Faulty fuel injectors: Faulty fuel injectors can cause the engine to run rich, which can also produce smoke.

If your car is smoking, it is important to have it checked by a qualified mechanic to determine the cause and get the problem fixed.