Why are the glow plugs on my Duramax breaking?

The glow plugs are powered by a glow plug control module which sends the electrical current to heat them up. 2006 year models had a control module issue in which the module was known to overload the plugs with current, causing the tips of the glow plugs to actually break off.

Where are the glow plugs in a diesel engine?

Glow plugs sit within each cylinder of a diesel engine and have a metal “tip” at the end of them. During the ignition process, the tip of the glow plugs are provided electrical current to create heat within the cylinder.

What are the symptoms of a bad glow plug?

Glow plugs are pretty cheap and easy to replace so I recommend refreshing with a new set if you have any of these symptoms: 1 Hard starting / difficulty starting (especially in cold weather) 2 Rough idling 3 Cylinder misfires 4 Glow plug engine light 5 Black smoke coming from the exhaust

When was the Duramax LBZ engine phased out?

When you couple the performance potential with the reliability, and lack of emissions regulating systems, it’s no wonder the LBZ is still the fan favorite over 13 years since its discontinuation. The engine was phased out in 2007 solely for the purpose of emissions regulations.

How are glow plugs used in diesel engines?

To combat this, diesels use glow plugs which are essentially metal rods that stick into the cylinders. Upon engine startup, the control module sends an electrical current to the tips of the plugs which provides the necessary heat to allow the fuel to ignite.

What are the most common Duramax 6.6L engine problems?

5 Most Common LBZ Duramax 6.6L Engine Problems. 1 1. LBZ Cracked Pistons. The LBZ is revered for its tune-only performance capabilities. With various upgrades, this engine is easily capable of 2 2. Duramax LBZ Water Pump Failure. 3 3. Glow Plug Failure – LBZ. 4 4. Allison 1000 Transmission Line Leaks. 5 5. Duramax EGR Problems.