Still having a hard cold start on my gta 305 tpi. I need this car to start reliably so I can drive it. Problem I'm having is when the car is bone stock cold it will not start if I spray starting fluid in it she fires rite up! I have had the 9th injector totally cleaned and rebuilt I have put a new fuel pump, fuel filter, fuel pressure regulator, fuel pump relay new plugs and wires I just don't get it when I get it running she runs like new so weird please help me out

Note: car has 200,000 miles on it

 

You need to check to see if the 9th injector is being activated electrically.
Have you check the fuel pressure? I know everything is new, but you don't know if its leaking down if you don't check it.

 

The brass switch in intake on the left is the CSI switch.
Should have 12V to it and out of it to CSI when cranking engine over cold (only )

 

OK thanks guys I'll try those and get back to you