Hi. I replaced my PCV valve but the hose it connects to is cracked at the end. It's still loose and I can pull it off with my hand. It is very hard to get it to stay connected. So my question is that while I am driving, what would happen if the PCV valve accidently disconnects from the hose? Would I still be able to get to a service center?
If the PCV valve becomes disconnected it allows a direct intake manifold vacume leak. This will cause the engine to stumble and run bad and even die during idle. It is easy to lacate and fix. Look for a medium sized hose running from your throttle body on top of the intake going down to the top of one side of the valve cover/s. You should see the PCV valve. Just ensure that it is connected. To tell if one is working properly you need to clean it up and blow through it. It will allow you to blow one way and not the other.
Depends on the vehicle, most cars may run rough, sluggish, some wont even run, every car is different on how much actual vacuum is running through the pcv valve that will determine if its drivable. Run it for a minute..drive it around the block make sure it wont die...then take to the shop.
in the short term, use a plastic wire tie to secure the hose until you can buy a new hose....you need to replace the hose.
