Piston Ring End Gap, Measuring
WARNING: This page is about a different car, the 2016 Audi A3 and 2015 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.
-- Push in the piston ring at a right angle.
-- Push from above down into the lower cylinder opening until it is approximately 15 mm from the edge of the cylinder.
-- Use a piston without a piston ring for pushing it in.
| Piston Ring | New | Wear Limit |
|---|---|---|
| 1st Compression ring | 0.30 to 0.40 mm | 0.55 mm |
| 2nd Compression ring | 0.20 to 0.45 mm | 0.95 mm |
| Oil scraping ring | 0.25 to 0.50 mm | 0.75 mm |