My truck started idling really rough, it's hard started since I got it (roughly 3 months ago) but within the last week the hard starting has gotten a lot worse. It's never not started though. And it seems like its lost a lot of power.. a lot of hesitation when I accelerate and it's kind of boggy... I'm a newbie trying to teach myself how to work on my truck so I'm having a real hard time diagnosing this.. cause it could be a lot of different things. I'm hoping to get answers on where to start in diagnosing, what to rule out, what to check first type thing. Any help is highly appreciated!