I have a 2011 F450 with a 6.7. It has 99K. The whole fuel system was replaced about 10K miles back. I installed a dieselsite aux fuel filter/water separator after that. Has been running like a top till this am on the way to work. Right before I get to my biz the reduced power warning came on, fortunately I made it into the parking lot at my biz. Then the engine died and it would not restart. Hooked it up to auto ingenuity and I got the P0087 code. I changed the diesel site fuel filters and the stock primary and secondary fuel filters. The diesel site had a little bit of sediment but no water whatsoever. The Ford filters were very clean and had no trace of sediment or water, but I replaced them anyways. I cleared the code and tried to restart the engine but it will not start. Checked for codes again and now has P0087, P2291 and P2539. The pump is kind of loud when trying to prime the system but there is pressure to secondary filter on engine. I do not have a gauge and adapter to check the pressure yet. I did pick up a replacement pump before the parts dept closed. Could the pump still be bad even tho I do have pressure at the secondary filter?

 

Went ahead and replaced the pump new one sounds much better. Cleared all codes cycled it at least 6 times. P0087 comes right back after I cycle the pump? I went ahead and cranked it and it spins over real fast even sounded like it wanted to go for a brief second but no. Then P2291 & or P2539 come back. I guess I'm towing to the dealership Monday am unless anybody has any ideas?