petrol circuit

 petrol circuit

The diagram has been simplified to highlight the main channels. For example, I did not indicate a possible return of fuel from the injection pump to the tank which allows the surplus received to be returned. Not to mention the canister which collects the fuel vapors to filter them and possibly send them back to the intake (to help when starting)

Illustration of some elements

This is what some of the organs shown in the diagram look like.

Submerged / booster pump

Injection pump

Fuel Filter

Test your injectors?

If you have a direct injection with solenoid injectors it is easy to test the injectors. Indeed, it is enough to disconnect the return pipe of each one of them and to see the quantity of return of each one of them. Obviously, it is necessary to ensure that the disconnected pipes lead to a tank so as not to leak fuel into the engine block .