Checking Piston Ring Gap
WARNING: This page is about a different car, the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Jetta, 1996 Volkswagen Passat, and 1996 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- Insert ring into cylinder from above. Push down squarely on piston ring until it is approx. 15 mm (5/8 in.) from bottom of cylinder
PISTON RING GAP SPECIFICATIONS
| Piston ring | Ring gap - mm (in.) | ||
| New | Wear limit (AAZ) |
Wear limit (1Z AHU) |
|
| Top compression ring | 0.20-0.40 (0.0078-0.0157) | 1.2 (0.0472) | 1.0 (0.0394) |
| 2nd compression ring | 0.20-0.40 (0.0078-0.0157) | 0.6 (0.0236) | 1.0 (0.0394) |
| Oil scraper ring | 0.25-0.50 (0.0098-0.0197) | 1.2 (0.0472) | 1.0 (0.0394) |