the car is a 1977 280z

back story.....

the injectors in the car were real bad. tips were cracked and broken and probably clogged up. the engine ran real lean and the fuel pressure was low(20-25 psi) had a severe lack of power(wouldnt rev past 3k) other than that, it ran. its my daily driver.

present time....

i installed new injectors and it fired up the first time and ran for only a few seconds and was unable to get it restatred(however now the fuel pressure is where it should be 36 psi). i investigated and found it to be very flooded( all 6 plugs were wet, heavy smell of gas in the exhaust pipe.) the old plugs had some speed glazing from running lean, so i switched those out as well.

if i pinch of the fuel line it will start and once i release the fuel line it imidietly floods again.

i have read other threads similiar to this but havent found any with feed back as to the if and how it was fixed.

any ideas would be great.

1- Check all the vacuum connections and vacuum hoses to ensure there are no leaks.

2- Check and clean the electrical connections to the air flow meter and coolant temperture sensors.

Doubtful that vacuum hoses or electrical connection are going to cause flooding. Either all 6 injectors are leaking which is unlikely if they're new, or you have weak spark. I.E. either you're getting too much fuel into the cylinders or the fuel that you're getting into the cylinders isn't getting burned. There are many possible causes for this so rather that guessing, I'd suggest reading through the trouble diagnoses part of section EF in the FSM.