Checking piston ring gap
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, 2003 Volkswagen Jetta, and 2003 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
Special tools, testers and auxiliary items required
- Feeler gauge
Test sequence
- Push ring squarely from above down to approx. 15 mm from bottom end of cylinder. To do this use a piston without rings.
| Piston ring | Gap | ||
| New | Wear limit | ||
| Compression ring | mm | 0.20...0.40 | 1.0 |
| Tapered-stepped ring | mm | 0.20...0.40 | 1.0 |
| Oil scraper ring | mm | 0.25...0.50 | 1.0 |