Why my bmw 320d wont start when it is warm...starts good when cold

SOURCE: BMW E46 320d Fy81457

replace fuel presure regulator

SOURCE: BMW 320TDI HARD TO START WHEN WARM

Probable Spark plugs have blown. I would do a good tune up and replace your fuel filter, plugs and wires, oil and oil filter, air filter. Your system builds enough fuel pressure when it's cold becuase there is technically less are in your combustion chamber when it's cold so it can build more fuel pressure to start. When it's warm there's less room to build pressure to start your motor. So do a good tune up for now and see if that works. Hope you the best!

SOURCE: BMW E46 320d SE 2002 Poor starting from cold, OK when warm.

rub your **** on the key fob

SOURCE: bmw 320d engine smoking

YOU MAY HAVE BLOCKED OIL RETURN HOLES,REMOVE VALVE COVER AND CH# THE 2 F/R

SOURCE: engine keeps flooding itself, and wont start when warm

leaky fuel injectors or a bad fuel pressure regulator could be the cause. check the fuel pressure. should be 3.0 to 3.5 bar.