October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Piston Engine Models: GLC

Remove PCV valve. Blow through valve with mouth pressure from valve cover side of valve. Air should pass through. Blow through valve from opposite end. Air should not pass through. If valve does not operate as described, replace valve.