Which outcome occurs when an engine's fuel injectors experience varnishing from fuel oxidation?

💡 Explanation

When fuel injectors varnish, fuel flow becomes uneven because deposit buildup restricts spray patterns, causing localized lean pockets, leading to hotspots and potential piston damage. Therefore piston damage results, rather than other failure modes which depend on different chemical or mechanical processes.

• Which risk increases when setting the tendon duct profile too high within a prestressed concrete bridge beam?
• Which risk rises in hydraulic fracturing when pressure pulsations excite a gas-charged accumulator?
• Which outcome happens when a pre-stressed concrete beam experiences excessive shear stress near support?
• Which mechanism causes stick-shaker activation during powered flight near stall?
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