Car is not starting I can only hear fuel pump?? HELP!!

[DSM1491]

Ok guys so I've been having a problem with my car for a while now. My car drives fine for awhile but then out of no where it wont start. compression is good, timing is correct, installed wallbro 255 thinking it would fix the problem and it didn't help, just installed 880cc injectors and still doing the same thing. I was driving it fine yesterday and today when i wanted it to turn on it wouldn't. sometimes if i shift into first gear or something it will start but not today. If i push start it, the car will start but I've heard that it is bad if you do it too much causing valves to bend. I have cleaned battery terminals and still no luck. i will be posting up a video soon of what my car sounds like. spark plugs are good and cables are fine. Again the car was running fine but once in awhile it does this and its starting to annoy the hell out of me. i dont know what else to check. Also i hear a clicking noise after i try to start it coming from behind the stereo. My battery voltage is at 12.3 when i switch the key to ACC Is that too low??Any ideas on what it could be? Any help is appreciated. Thanks guys

Mods:
FMIC
ACT 2600 clutch
Small 16G
880cc injectors
wallbro 255
turbo back thermal R&D exhaust
DSMLink V3 full
Evo 9 pistons
Evo 9 rods
ACL race bearings
ARP rod bolts
3g lifters

[ame=http://youtu.be/QRv2RkoVP7Q]20130601 171629 - YouTube[/ame]

 

[mcbug19]

If you have checked your fuel pump you might want to check the MFI/MPI relay and the fuel pump relay seems like it would be a good start

 

[ForsakenLash]

have you checked the started to make sure its not failing or has a good connection and ground?

 

[92AWDHX40]

http://www.dsmtuners.com/forums/articles-miscellaneous/217951-how-diagnose-no-start.html

 

[WES_393]

Make sure the starter wires are clean and tight. Especially the ground wire on the bell housing.

If those check out then I would suspect the starter itself.

 

[DSM1491]

Ok guys so I figured out what it was after checking everything else. I new it was gonna be something simple i shoyld have tried this first nefore anything else. It was the negative cable on the battery. It wasn't making good connection. So I changed the terminal on it and tightened all the bolts on the posotive terminal and fired right up. Thanks guys for all the replies.