Porsche 914 1.8L FI flooding, Flooding Options

[Rod911964]

Greetings and HELP
Purchased a 1974 914, 1.8L FI.
This Porsche has not been started in 24 years.
So I have...
Replace the tank
Replace every fuel line
Replace fuel pump
Rebuilt injectors
New Spark Plugs
Replace all vacuum lines
New Cap & points
New spark plug wires
checked for spark (got it)
Check fuel pump function (OK)
Checked for vacuum leaks (none found)
Checked AFM (made lean, the changed back to orig. setting)

So my problem.
The engine starts for only a moment, say about NMT 10 seconds then dies out.
Upon cranking the starter I am getting a lot of raw gas in the exhaust system, so much its spitting out the pipes. I collect about 3-4 ounces is a catch tray.
Could I have the fuel tank lines reversed?

So what am I doing wrong or what is wrong.

Thanks in advance.

[Rod911964]

Aftermarket pump (from Autoatlanata, "sanctioned as correct").
Have not yet installed a pressure gauge. This on the list of things to do.

I have checked the seals to all 4 injectors and appear to be installed and sealing ok.

Nonetheless, something is not correct with fuel delivery. There is so much gas collected in the exhaust system, I know its just a matter of time when it will ignite if not corrected.

How can I confirm I have the fuels lines (output and return) at the tank thru the newly install SS lines in the tunnel correct?

Thanks!
Rob