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Revision question · Vehicle condition
In a diesel engine fitted with glow plugs, what does the preheating device warm?
Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.
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To heat the cab
To heat the gearbox
To heat the combustion chambers
To heat the seat
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To heat the combustion chambersThis was the right answer
Glow plugs heat the combustion space to assist cold starting. Follow the fitted indicator and handbook; diesel engines do not all use the same cold-start system. The coiled-wire symbol is associated with glow-plug preheating.
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