Glow plugs are located similarly to spark plugs on gasoline engines, and have a similar function. Without properly working glow plugs your vehicle may be a nightmare to start when cold. The glow plugs on your Diesel engine provide heat to the combustion chamber to aid in the starting of a cold engine, and the more glow plugs that fail in your engine, the harder it will be to start.
Heater glow plugs are ideal for vehicles like Vivaro, Trafic, Laguna, Qashqai, X-Trail, and Primastar.
