P1450 Ford - 500

Question

I've already replaced the fuel filter and bought a new gas cap...
What else do I need to check?

Answer 1

Hi there,

This code could also result from a leak in the evap system or a problem with the vent control valve. Since the code means it's unable to bleed up vacuum, you need to have a smoke test done to try and locate the source of the evap leak.