What causes a diesel engine to lack power when accelerating?

[MacCassidy]

The reason a diesel engine lacks power when accelerating is that either the throttle position sensor or the intake pressure sensor has malfunctioned. The throttle position sensor and intake pressure sensor are crucial sensors for detecting engine load. If either fails, the engine control unit (ECU) can use substitute values to keep the engine running, but performance will be significantly degraded, with varying symptoms depending on the severity of the damage. The working principle of a diesel engine differs somewhat from that of a gasoline engine. A four-stroke gasoline engine has a power stroke, where the spark plug ignites the air-fuel mixture in the combustion chamber at the end of the compression stroke, causing the mixture to burn. The burning mixture then pushes the piston downward, enabling the engine to produce power.