The main function of the intake manifold is to evenly distribute the combustible mixture provided by the carburetor to the various cylinders. For carburetor or throttle body gasoline injection engines, the intake manifold distributes air and fuel mixture to each cylinder intake. For a port fuel injection engine or diesel engine, the intake manifold simply distributes clean air to the cylinder intakes
Maintenance of the intake manifold includes regular inspection of its tightness and the cleanliness of the flow path. If air leakage or blockage is found, timely maintenance or replacement is needed. In addition, the fault diagnosis of the intake manifold can be carried out by checking whether its connection part is loose or damaged, and whether the flow channel is clear
