I have a 2008 5.4 f150 and I cannot find this hose anywhere! I went to the dealership and ordered the part and both times they have gotten the wrong hose. It's a hose that comes off the purge cylinder on drivers side and goes across the top over the engine and plugs into the top off the engine on the passenger side. Does anybody know what it's called or where to find it? Any help would be appreciated. Truck is slow to accelerate and makes a popping/grinding noise when I go into passing gear..

 

Go to fordparts.com and put in your vin. You can see diagrams of your engine bay and it will show you the right part..