Ticking noise on passenger side cylinder #1 and rough idle

What is your question?

I have a 2011 ford ranger xlt 4.0 with 76000 miles on it and noticed that it was Idling rough and a ticking noise on the passenger side cylinder 1 I have changed the plugs and wires fuel filter and it still has a rough idle and the ticking noise won't go away it does quite down after it warms up but is still there I cant see it being a bad lifter at only 76000 miles but cant figured out what else it could be there might be a vacuum leak for the rough idle but the check engine light is not on though it may not come on please help I'm at the end of my rope I don't want to put off something that might get worse

How long has your 2011 Ford Ranger had this problem?

About 2 months