D-Jet Running Rich and I dont know why, I've tried everything Mr. Anders Options

[nbscooters]

I have a stock 1973 2.0 with djet with approximately 30,000 miles on a brand new motor.

BRAND NEW:
- Fuel lines
- Fuel injector seals
- Correct CHT temp sensor(0 280 130 017)
- Spark plugs
- Fuel filter
- Trigger Contacts


Things i've checked:
- Fuel pressure set at 29
- No vacuum leaks(new vac lines)
- Timing is set
- Valve adjustment
- Continuity between the CHT and the ECU
- Timing is set
- Plumbing to CSV is disconnected
- Correct MPS that holds vacuum

I am wondering if it could be a series of malfunctioned injectors or something that I haven't overlooked. Whats the best way to bench test injectors to check for rate and spray pattern?


When I start the car when its cold, the exhaust spews a black liquid for a couple of minutes then it goes away after its warmed up. Attached is an image of the black liquid.