Hey guys i have a 2003 g35 6spd and the problem im having is sometimes when i go to start it all the lights are coming on but when i do a full turn to crank everything blacks out as if i had not pushed the clutch in "but its all the way in" and every time so far ill release the clutch and give it a HARD kick to the flor bored and it cranks! "?" Also i want to note that the car had been professionaly wired for an amp before the car was mine and just recently i bought an amp and hooked everything back up it worked fine then started cutting off like its loosing ground or has a short? The reason for the info on the amp is because im thinking that maby it is affecting the car not starting but i really have no idea, any help would be great!!!

 

I've seen time and time again the clutch sensor going out in the manual transmission and not even letting the car crank. You should definitely look into that.

 

Agreed ^