v36 crank no start issues

[chi1]

hi everyone ,

Am totally new to this but i recently got a 250gt 2007 HR. The car cranks but will not start.The first diagnostic  was done  but gave no errors...we checked the spark plugs , compression ,  changed the crank sensor , checked the fuel pump, got an auto electrician to check the grounds.does anyone have any ideas to help us get back?

Edited January 30, 2019 by chi1

[sonicii]

Does the security light stay on while cranking?  these are the symptoms you will see if NATS can't read the key chip, or reads an unrecognised chip.

[mutex]

Do as previous replier and check the security light.

If not it may be the camshaft sensors, they sometimes throw a code, sometimes not (this happened to my v35).