The 6 Most Common Duramax LLY Engine Problems
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The 6 Most Common Duramax LLY Engine Problems

In order to meet stricter emissions regulations, the LLY replaced the LB7 engine and was the first Duramax to use EGR emissions technology. Unfortunately, the new EGR system was problematic leading to common valve failure. Aside from this addition the new engine received a variable vane turbo and eventually got some block and internal upgrades…

The 5 Most Common Duramax LBZ Engine Problems
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The 5 Most Common Duramax LBZ Engine Problems

The LBZ Duramax is, still today, the favorite Duramax of diesel enthusiasts and one of the most sought after engines. The LBZ was upgraded to be able to handle more power than the previous Duramax and to improve reliability. Furthermore, the LBZ has limited emissions equipment, preventing major problems that newer diesel engines face. The…