What would cause a sudden loss of all left bank
injectors?

 

I'll have to check to verify... but if you lose all injectors on just one side, it's likely loss of a common ground or a common power

are you sure it's injectors and not coil packs?

If Coil packs, there is one connector per bank that provides
1. common ground
2. common 12 volt
3. unique "fire" line

if injectors... I don't remember off hand how they're wired... but it's likely a loss of a common ground or power

 

Thanks , ill check both of these i think there a problem with connector for left bank coil pack

 

I can get all the power back to left bank and drive the car by replacing the #1 ignition fuse (15)amp however i cant find the actual cause so i guess it must be a intermiting short what the easyest way to locate it?

 

so the fuse keeps popping?

what mods did you do prior to this problem?
Have you done an intake manifold recently?

Make sure there aren't any wires close to your headers.. if a related hot wire touches the header during driving, it'll pop the fuse immediately

 

Thanks ill keep looking ,this may take some time to hunt down.