Are there any problems with the LLY engine?
However, there are a number of new issues that have arisen due to the changes, and a number of shared problems with the LB7. Additionally, 2006 LLY models are very comparable to the LBZ engine, creating a number of overlapping common problems there as well.
What are the most common LLY Duramax engine problems?
The 6 Most Common LLY Duramax Problems. 1 1. LLY Bent Rods. While the LLY made competitive performance numbers back in 2004, the engine is certainly not competitive to the modern day diesels. 2 2. Head Gasket Failure – LLY Duramax. 3 3. EGR Valve Failure. 4 4. Glow Plug Failue – 2006 LLY Duramax. 5 5. Overheating in Pre-2006 Models.
What’s the exhaust gas circulation system on a LLY?
Unfortunately, exhaust gas circulation (EGR) systems were standard on every Duramax LLY produced. The EGR system included a EGR valve and cooler. At a high level, the EGR system recirculates exhaust air back through the engine so that it can be re-burned in the combustion cycle, reducing the amount of nitrogen oxide released into the atmosphere.
However, there are a number of new issues that have arisen due to the changes, and a number of shared problems with the LB7. Additionally, 2006 LLY models are very comparable to the LBZ engine, creating a number of overlapping common problems there as well.
What causes head gasket failure on LLY Duramax?
Head Gasket Failure – LLY Duramax The LLY has the largest turbo in it out of any other 6.6L Duramax variants. Outside of it being the largest turbo, it had the largest compressor wheel and the tallest exhaust vanes. The end result is having an extremely efficient and high-flowing turbocharger.
The 6 Most Common LLY Duramax Problems. 1 1. LLY Bent Rods. While the LLY made competitive performance numbers back in 2004, the engine is certainly not competitive to the modern day diesels. 2 2. Head Gasket Failure – LLY Duramax. 3 3. EGR Valve Failure. 4 4. Glow Plug Failue – 2006 LLY Duramax. 5 5. Overheating in Pre-2006 Models. More items
Can a 6.6 liter diesel engine start in cold weather?
At 6.6 liters, these engines (and all other diesels) are big hunks of metal. Because metal absorbs heat, and there is so much of it, starting a diesel engine in cold weather can be a challenge. The internal combustion temps have difficulty getting hot enough to ignite fuel and start the engine.