Audi Q7 Glow Plugs & Timer Replacement at your home or office.

What is the Glow Plugs & Timer all about?

A diesel engine is different from a gas engine that relies on a spark to ignite the mixture of fuel and air that makes the vehicle run. With a diesel engine, the fuel ignites when it’s subjected to high pressure. The fuel temperature heats up to the point where it simply self-combusts. In warm weather, this works just fine, but when it’s cold, the diesel fuel needs help heating up. The glow plugs work to heat the fuel/air mixture so that the vehicle will start in cold weather. Glow plugs are, quite simply, small heaters. There are usually two glow plug timers. The first one sets the preheating time, and the second tells the auto start module when to crank the engine.