Hello all,

I had to pull my camper with my '89 the other day because my other truck was getting serviced and noticed the '89 had a small exhaust leak that ended up being a bigger leak by the end of the trip that was about an hour. During that trip the 4x4 shifter and floor got very hot (exhaust leak is where manifold meets tailpipe), Engine never got hot but I popped the hood the other day and found hoses and some sort of valve melted. Looks easy to replace and truck runs fine just loud from exhaust leak, (which is being fixed as I type this) but what is it called? It has alluminum pipes that come from manifold that junction into rubber hoses and 2 identical valves. I tried to upload a pic but it won't let me. My truck is an '89 F-250 w/a 351W and these are on the steering side of the intake.

 

It sounds like you're talking about lines for the thermactor/smog pump system, but it's hard to tell without a pic.