Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Injection System
See Figure .
Fuel drawn from the fuel tank (8) by the pumps (9) and (10), is constantly supplied to the injectors (12) through a filter (11). A fuel pressure regulator (13), rated at 3 bars, is always under manifold pressure to maintain a constant pressure at the injectors based on a given manifold pressure. A pulsation damper (14) is located in line upstream of the injector distribution pipe (15). It reduces the noises caused by the pressure variations occurring as a result of the opening and closing of the injectors.
The ECU (1) controls all the injectors simultaneously and delivers its atomized fuel upstream of the intake valves. This system is also equipped with:
- An auxiliary air device (16) for cold start operation
- An auto diagnostic feature which alerts the driver of engine malfunctions through a flashing indicator (CHECK ENGINE) (17) and a system tap for interrogation by connector (18)
- A canister purge electrovalve (19) for fuel vapor recovery
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.