I regularly inspect my '76 230 (4 cyl gas) engine for anything odd, because my mechanic is really a VW specialist and I had him install my engine. I have found a hose coming from the bottom of the engine block (on the side of the coil and brake cylinder) and it seems to be plugged up with a bolt. I cant seem to find out what it's for as my Chilton's manual doesn't have a complete map of my particular engine.
Is anyone familiar with this 115.951 engine and what this hose could be for ? I'm wondering if it has to do with all the idling problems I've been having lately ?
1976 230.4 W115
P.S. The black hose is about 3/4" in diameter.