I wasnt aware this is how it worked
Bosch K-Jetronic (CIS) explained - YouTube
So , its 100% mechanical for what is stopping fuel from reaching the injectors if the fuel pump is running. I must of messed something with my air flow meter. Ill inspect tomorrow.
Question : The IACV is connected to two hoses. One hose goes back to the "air chamber" where the fuel metering valve is located. The other hose (the one i replaced) runs to the cold start valve. Where does this hole run to? Does it feed all the cylinders?