06/18/2026
2.8 Duramax Diagnosis 🔧
This 2.8 Duramax came in after having the timing incorrectly set and concerns of excessive blow-by. We performed a leak-down test to verify the engine’s condition and pinpoint the source of the issue.
In this case, the engine had suffered an internal failure that allowed fuel to enter the crankcase, filling the base with fuel and causing the oil to bubble heavily. Proper diagnosis is key to identifying the root cause and ensuring repairs are done right the first time.
