Noise gone now sounded like air from turbo . Got new hose for heater longer moved to foward plug hole moved plug to where the hose was pluged in to block . I saw a post that said to move the hose ,Dummy me thought that it ment to move it left right up down ? Well some times it has to sink in . The plug hole is the first large 1/4 sq drive 5/8 plug or so. Sounds like a new truck . Ron in Louisville. Oo. Oo. Oo. 
