Low fuel rail pressure codes
 

I just had my first CEL come on today with the Mini Max. Codes are P1011 no description and P087 low fuel rail pressure. 07,6.7 CTD. I would like to get some opinions as to the cause. I've been told weak rail plug,clogged fuel filter, or bad lift pump. More input would be great Thanks guys:c:

thats where i would start is change fuel filter if dont help shim the rail releif valve or plug them two would be the cheapest easiest fix and check the psi on the lift pump make sure its not weak if so upgrade to a fass or airdog