dieguito53

need some help. i belong to fire department at Guatemala. we have a mack fire truck 1983. the part that i need to know the name is: CP4X 6916C218CP Pedigreed Reman Exchange 214-MRC-590 my engine number is: 107GC4115AP L41 i dont know about this part. i have some photos. this part is placed in the intake manifold. its a kind of valve with 2 hoses. some guy adjust them to the valve and it just start to not lose air pressure at the brake system thanks for the help