Which of the following is a likely cause of low engine power output?
Defective injector
Low engine power means the cylinders are not producing their normal output during combustion.
A defective injector delivers the wrong quantity, timing or spray pattern of fuel, so combustion in that cylinder is weak or incomplete.
The poor burn directly cuts the power that cylinder contributes, lowering the engine's overall power output.
Hence, the answer is defective injector.
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