Exhaust manifold gaskets are being discussed. Technician A says many modern vehicles are built without gaskets between the cylinder head and exhaust manifold. Technician B says when performing any service on theses engines that will require removing the manifold from the head, a new gasket should be installed.

Question

Quizplus · Accepted Answer

Technician A is correct because many modern engines are designed to use metal-to-metal contact without a traditional gasket for the exhaust manifold, relying on precise machining to prevent leaks. Technician B is also correct because if a vehicle does have an exhaust manifold gasket, or if the service procedure or manufacturer recommends it, a new gasket should be installed upon reassembly to ensure a proper seal and prevent exhaust leaks.

Exhaust Manifold Gaskets Are Being Discussed