Okay so i have a fiesta mk2 with a swapped 1.6 T mfi in it. Now it has some trouble starting but i got that fixed by adjusting the set screw jnside the metering head. Finally it ran and it ran great too. Before it had misfirs but i changed the rubber o-rings in the fuel distributor and had one glorious evening of great turbo fun. But when i tried to start it up in the morning it wouldn't start. I changed the idle screw again and when it was very rich i got it to start. But it ran like a dog, when i opend the throttle it almost and did die. I don't know what could have happend overnight that made it not wanting to start?? I was thinking timing? How can i check this?

I have:
SparkFuelAnd air? (Not sure but the mfi vacuüm flap moves when cranking)

Please help, i am all out of ideas.

Thanks in advance