The good news is the replacement injectors you purchase from us incorporate several updates to help prevent repeat failures. The LB7 Duramax built from 2001 – 2004.5 is known for injector failure. The total cost to have a mechanic replace 8 injectors on an LB7 Duramax can range from $4000 – $5000 CAD, depending on what other work is performed at the same time. How much does it cost to replace injectors on LB7? The process changes from model year to model year and is complex enough that we recommend purchasing a service manual if you are attempting this job yourself. Poor quality fuel will cause premature injector failure. LB7 injectors using Bosch common rail technology operate at very high pressure. Another common failure is body leakage, which adds diesel fuel to the engine oil, causing the level to rise. What year Duramax has injector problems The LB7 Duramax built from 2001 2004.5 is known for injector failure. Typical LB7 injector failure is dripping at the nozzle, causing white exhaust smoke, especially noticeable at idle. The total cost to have a mechanic replace 8 injectors on an LB7 Duramax can range from 4000 5000 CAD, depending on what other work is performed at the same time. What are some other common 6.6L Duramax LB7 problems?Ĭommon problems found on the Duramax 6.6L LB7 engine are white smoke at idle, hazy exhaust smoke under light load, and engine oil levels increasing due to fuel contamination. When you’re ready visit our Canadian diesel parts shop to purchase a new fuel pump. How to replace Duramax fuel injectors and how much it’s going to cost. Learn how to know when an LB7 injector is going bad. Duramax LB7 injectors are the number one fuel injector pumps we get questions about.
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