02 BMW X5 3.0 code P1347

Question

Peridaclly while driving check engine comes on and it throws the p1347 code, it runs badly with no power, engine shaking, ect. If you turn off the car and restart it it will run normal and engine light goes off.
Seems that it begins happening more often when under a load going up a hill at a lower RPM but not all the time, just most of the time.
Also if you have been sitting and idling for a long period of time when you begin to drive off it will also start to do the same as above.

Answer 1

P1347 Multiple misfire
This condition that you have is more fuel related. The fuel [pressure is not being maintained.