[theunderlord]

air is getting into the system somehow.

when was the last time you changed the filter?

did you use new orings on the main seating area, and the WIF sensor?
what tool did you use to tighten the WIF?
did you lightly lube the orings?

 

[theunderlord]

I did change the filter and the truck doesent hesitate anymore. It used to hesitate before it all of a sudden got its got up and go. It also would just quit out of the blue and then we pumped it back up. I didnt lube the o rings but I changed them. What do you lube them with?

Vaseline works. I used Dow Corning 111.