PNE took a 1-0 lead at half time with a goal from Brandon Zibaka. The Lilywhites also had a penalty saved frpm Matt Dudley.
Second half goals from Luke Clarke via a penalty, Ryan Croasdale and Matt Dudley gave PNE a 4-0 lead before Bury pulled a goal back near the end from Tom Pratt.
Preston are top with 16 points from 7 matches. Carlisle a second and a point behind after a 3-2 win at Accrington. Walsall who didn't have a match are third but still have a 100% record with 15 points from 5 games. Bury are fourth with 12 points after 6 matches.