Medium and Heavy Trucks
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You may want to have the fuel tanks stand/pick up tube checked inside the fuel tank. A simple crack in the pipe or a bad weld at that level will allow air to be injected and cause your issue. Your best bet will have a dealer look into this . Please don't forget to rate my service
They will come out than they will need to be pressure tested. Its not an easy task. some cases you must remove the fuel tank.
Hi. Just following up. Please don't forget to rate my service.