B3000- EGR problems,
 

Ok Im new, but if anyone can help me out, i would really apprieciate it. I have a 99 B300, v6, flex fuel (peice). Ive had problems with the EGR valve and vacuum hoses that connect to it. I have been through 5 hoses, 3 egr valves, and lots of money being screwed by a really bad machanic! The hose keeps blowing off the connector and melting the egr valve. If anyone can give me a suggestion on whats going on, it would be greatly appriciated. Thanx