A fuel injection system Fuelpump Fuel filter Fuelaccumulator Fueldistributor Inlettract Inletmanifold Injectors Cold-startinjector Pip frompetrol tank Return pipeto tank
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Petrol-engined cars use indirect fuel injection. A fuel pump sends the petrol to the engine bay, and it is then injected into the inlet manifold by an injector. There is either a separate injector for each cylinder or one or two injectors into the inlet manifold.

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How a fuel injection system works

For the engine to run smoothly and efficiently it needs to be provided with the right quantity of...