Hey folks I would like some advise. My 09 Jeep Wrangler JK makes a clicking (like lifters or loud fuel injectors) noise as I excellerate and during all crusing speeds. Has never done this before and took to dealer who said it was my exhaust. I did some more checking and several sources say it is coming from injectors and/or lifters. I have 50K in easy hiway miles. Ant ideas????