Hello everyone,
I have a 2013 Kuga 2.0 Diesel Engine and having the same problem.(The problem started after injector cleaning, and the engine hard starts first time every morning, not the other startings during the day)
What i have done till now is:

• Checek with IDS and no fault code recorded (neither active nor passive)
• Checked battery (with special tool) OK
• Check and replaced fuel filter and o-ring.
• Bleed air with hand pump.
• Checked fuse OK (as described in the user manual passenger side fuse box F56 numbered and 20 A)
  • noticed that even the fuse removed engine started???

Any advice will be helpful,
It is so annoying that everyday only first starting become a nightmare