dont know if this helps, but with my car (MA70 7MGE) it has a problem with starting first thing in the morning.
The cold start injector was completely blocked. I tested fuel by removing cold start injector and sticking hose in a bottle and got someone to turn over the engine a little. Is a little back yard but soon told me i had fuel pressure.
I am pulling apart engine to clean other 6 injectors this weekend as atleast one injector is stuck open (250km tank fuel).
Sorry for telling my life story....... but if it starts fine when warm or runs fine after 10 seconds or so i would say it would be fuel. Test fuel pressure and even replace fuel filter just in case. Thats where i would start
Hope this helps and am open for corrections if i am wrong