2004 G35 Problems Need Help!!!!

I have a g35 that isn't starting to well anymore. Whenever I turn the ignition I get power to the dash and everything, but when I go to start it I get nothing. Eventually after working the ignition for 1-15 minutes it eventually starts. I was thinking possibly that it could be the solenoid is going out being as im not getting any clicking noises which would make me lean more towards the starter. Really I'm just trying to get an opinion before I put it up on a rack and spend more money then I have to. I also attempted to work the clutch thinking that it could be the neutral switch which didn't have any affect. If anyone can back me up or give me some help I'd appreciate it.

I have a g35 that isn't starting to well anymore. Whenever I turn the ignition I get power to the dash and everything, but when I go to start it I get nothing. Eventually after working the ignition for 1-15 minutes it eventually starts. I was thinking possibly that it could be the solenoid is going out being as im not getting any clicking noises which would make me lean more towards the starter. Really I'm just trying to get an opinion before I put it up on a rack and spend more money then I have to. I also attempted to work the clutch thinking that it could be the neutral switch which didn't have any affect. If anyone can back me up or give me some help I'd appreciate it.

just an idea. i have g35 and oneday it just didnt start. thought it was a starter problem and it turned out ot be a battery problem. check that and see if that helps. according to dealer battery is only good for 4yr lifespan. weird i know.