May sound stupid, but I can't see exactly how to remove the hose from that back of the engine that goes to the pcv. My engine is running really rough at acceleration and I just discovered a huge leak from that hose right where it connects to the back of the engine (throttle assembly?) It looks like a steel band wrapped around it at the end, but I can find no way of disconnecting it and am not sure I should just pull hard on the hose? It's hard to get a good look at and even harder to get my hand in there. My manual is not helping me and I've been googling with no luck as well. Ever dealt with this before?