Which malfunction occurs in a gasoline direct injection (GDI) engine when the fuel injector nozzle is excessively coked?

💡 Explanation

When a GDI fuel injector nozzle is coked, the flow is restricted because carbon deposits build up, impeding fuel delivery, causing a localized lean air-fuel mixture. Therefore a lean mixture results, rather than increased compression, pre-ignition, or elevated EGR, each of which require diverse engine failure mechanisms.

• Which outcome occurs when insufficient backpressure is maintained in a control valve within a hydraulic actuator circuit?
• Which consequence results when circulating currents induce hotspots in power transformer windings?
• Which outcome occurs when back pressure decreases dramatically in an evaporator?
• Which outcome occurs when a resonant circuit in a radio transmitter experiences parasitic capacitance at high frequencies?
• Which outcome occurs when asymmetrical saturation affects differential transformer protection?
• Which risk increases when antiskid system failure occurs during aircraft landing?