Inlet manifold gasket: replacement and selection

When and why it is necessary to replace inlet manifold gasket

Exact lifetime limit is not set for the inlet manifold gasket. Its replacement is performed at deformation, appearance of breakages or cracks. Also a new gasket should be installed at each demounting of the manifold, as at performing repair works on the assembly.

Deformation and damaging of the seal are the result of influence of high temperature on it, which occurs at engine overheating. And replacement of the manifold in assembly with the gasket can be required because of impact, for instance, as a result of a road accident.

The signs of inlet manifold gasket damaging are: unstable operation of the engine at start and idle running, excessive fuel consumption, decrease of torque. Defects in the inlet manifold can also be pointed out by the indicator on the instrument panel.

Replacement of the component has its peculiarities according to the car model, that is why it is recommended to apply to a service station for performing this work. So, for example, if the fuel injectors are built in the manifold, then, before starting the gasket replacement procedure, you need to release the pressure in the fuel system.