- Mar 24, 2003
I was installing a skid plate on my 2003 KDX 220 last night and noticed a small hole about .2 in. in diameter right next to the coolant drain. What is that hole for? Is there suppose to be a plug in it? I thought maybe it was some sort of coolant blow by hole in the event of a water pump shaft seal failure in order to avoid water in the crankcase, but not sure. Couldn't think of anything else it would be. Anyone know? Thanks!!