Which outcome occurs when a gasoline direct injector nozzle becomes partially blocked?

💡 Explanation

When an injector nozzle is blocked, spray pattern degrades because of reduced orifice area and non-uniform flow, causing incomplete fuel-air mixing and lean misfire, especially at lower engine speeds. Therefore lean misfire results, rather than rich burn, hydraulic lock, or detonation which require different fuelling faults.

• In a hydraulic system driving intermittent high-load actuators, which outcome occurs when the accumulator's pre-charge pressure is excessively low?
• Which outcome occurs inside a refrigeration system when non-condensables accumulate increasing system head pressure?
• Within aircraft hydraulic flight control systems, which consequence results when fluid pressure drops below the vapor pressure?
• Which outcome occurs when a parallel robot loses kinematic redundancy?
• Which undesired outcome arises with excessive integral windup?
• Which engine misfire pattern arises when inconsistent fuel injection timing causes alternating rich/lean combustion?