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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Mechanical - 2.8L (LWN) Diesel) >> Diagnostic Information and Procedures >> Base Engine Misfire with Excessive Oil Consumption

Base Engine Misfire with Excessive Oil Consumption

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Condition Action
Worn valve guides
  1. Inspect the valves and valve guides.
  2. Repair or replace all damaged components.
Worn valve stem oil seals
  1. Inspect the valve stem oil seals.
  2. Repair or replace all damaged components.
Excessive piston-to-cylinder bore clearance
  1. Perform cylinder leak down and compression tests to determine the cause.
  2. Inspect the piston rings for low ring tension, broken or worn rings.
  3. Inspect cylinder bore.
  4. Repair or replace all damaged components.
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