Change Respawn Time

I want to change the time it takes to respawn after death with the console becUse my character in gmod respawns after 5 secs. I want it to respawn when i press somethung(like in the original version) and yes i bought gmod through steam. I think i installed something or messed with the console and nos i have this problem. What do i type in the console to make my respawn time infinite?