1986 Chevy Silverado vacume digram

nunoit · Posted at Tue Nov 03, 2009 1:45 pm

Engine Performance problem
1986 Chevy Silverado V8 Four Wheel Drive Automatic

i have a 1986 suburban silverado there is no vacume digram under the hood. i want to hook the way it is supposed to go(cali or fed). 350 moter some vacum is connedted not all of it. from what i have found there is no ecm no cat(never was), 4 barrel carb egr ok engin is jasper air cleaner only has 1 hose connection for hot air moter. all vacum digrams welcome also proper air pump digram needed. thanks in advance joe

bluelightnin6 · Posted at Tue Nov 03, 2009 1:52 pm

what size engine? 5.0L, 5.7L etc.. gasoline or diesel?

jdl123 · Posted at Tue Nov 03, 2009 1:57 pm

Don't know if the above will work for you or not? Welcome to the forum.

nunoit · Posted at Wed Nov 04, 2009 6:23 am

just a fue ? what is efe valve (heat riser), dtstr tvs (?) and is hose that connects to air cleaner (between vapor can and decel vav) just a bleed for vapor canianster, other than that i think i can make work. there is some weard valve that connects to vapor canister wonder what it is, has 4 ports 2 for vapor 2 for vac ill see if i can pix to post. also carb has bowl vent where does it connect. (pluged now) once again thanks joe

jdl123 · Posted at Wed Nov 04, 2009 8:12 am

I believe tvs is thermal vacuum switch and efe is early fuel evaporation.

nunoit · Posted at Fri Nov 13, 2009 6:18 pm

nunoit · Posted at Wed Nov 25, 2009 3:50 pm

jdl123 · Posted at Thu Nov 26, 2009 7:36 am

Hi, the autozone site has free diagrams. you have to register your vehicle, it's free. Then click on repair info. I believe the vav diagrams is under the emissions link. Wiring diagrams under chassis link.