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  1. Promaster General Discussion Forum
    Hello all. 2020 HT PM2500 today my van decided it doesn’t like to have gas put in it. It keep backing up the filler and shuts off the pump. anyone experienced/ heard of this issue ? on a trip to Vermont … of course thank you in advance
  2. Engine and Technical Discussion
    Hello! When I take off the gas cap of my 3500 Diesel, even after a day, there is a decent hissing sound and a release of some air pressure. After some research, it sounds like this is a bad thing and a possible failure in the EVAP system. The only real reference I can find on this forum for...
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