raydioed

Help! Hey I have the same stuff on my 98 Cherokee Classic 4.0 2wd . Question..the hose that has the cap on it in your picture supposed to go to leak detector, just got the Jeep and the end of that hose is just there between engine and firewall stickn up loose and is open no cap nor a place to hook it to, I don't have a leak detector as I know of will it be ok to just cap it off and forget it? Maybe the guy that installed engine knocked the cap off if it had one, the duty cycle purge solenoid is still there and connected to 2 lines/hoses one to intake other going under I guess to cannister. If there aint nowhere to connect it what is it there for? I never saw it before.In case I want to install a leak detector maybe? My first Jeep..But thanks to reading all this good info here am leaning. Got a check engine lite on would the cap have anything to do with that? Wish I had a Comanche Thx for any info... Bob