2000 f250 7.3 sdp,won't start,have had trouble starting for some time,glow plug are working.when it would start,it would run rough for a few miles with no power,like it was running on 4 cyls,then,like you flipped a switch it would take off and run 'normal'.I changed fuel filter,put a new fuel pump on,now it won't start at all.the fuel filter can is filling up.

This link should help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-8.html#post1415281

Be sure to change both fuel filters (Motorcraft only). In the future, start using full synthetic HDDO. Conventional engine oil is the "kiss of death" to turbos.

Where is the other fuel filter?I changed the one on top of the motor.par ts house shows only one

Directly in front of the fuel pump, located on the frame under the driver's seat.

No other fuel filter on this truck