Checking The Piston Ring Gap

WARNING: This page is about a different car, the 2014 Volkswagen Touareg, 2013 Volkswagen Touareg, 2012 Volkswagen Touareg, and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Checking Piston Ring Gap

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Push the piston ring squarely from above down to the edge of the cylinder, until it is approximately 15 mm from the edge of the cylinder.

-- Use a piston without a piston ring for sliding in.

Piston Ring	New mm	Wear Limit mm
1. Compression ring	0.20 to 0.30	0.80
2. Compression ring	0.50 to 0.70	0.80
Oil Scraping Ring	0.25 to 0.50	- ¹⁾
¹⁾ Not determined yet.