I Having A Problem With A 4x4 Cosworth Basically Was A Non Runner, I Have
Checked And Rectified Spark At Plugs, Swapped Map Sensor, Swapped Crank Sensor And Tried Another Fuel Pressure Regulator

I Managed To Get It Started But There Is Serious Over Fuelling Black Smoke.
When I Un-plug The Injectors & Start The Engine It Runs Good For 2-3 Secs
So Tried Injectors I Know Were Just Serviced And Ecu For Same But No Difference. If I Reduce Fuel Pressure Regulator Pressure To Below 1 Bar It Runs And Idles Much Better But Still Over Fuelling (black Smoke)
Any Suggestions Please

P.S. I HAVE RENEWED COOLANT SENSOR & CHECKED WIRING AND THERE IS NO DIFFERENCE