Base Engine Misfire with Excessive Oil Consumption
| Cause | Correction |
|---|
| Worn valves, valve guides, and/or valve stem oil seals | Inspect the spark plugs for oil deposits. Repair or replace, as required. |
| Worn piston rings Oil consumption may or may not cause the engine to misfire. | Inspect the spark plugs for oil deposits. Inspect the cylinders for a loss of compression. Refer to Engine Compression Test . Perform cylinder leak down and compression testing to determine the cause. Repair or replace, as required. |
