Hi everyone,

I have a 1986 Chevy G10 Van with a 4.3L 262 Vortec Engine. It is fitted with a Rochester Quadrajet carburetor and I am having some problems figuruing out the routing diagram.

I'm going through the diagram line by line and I am looking at the line coming from the distributor that goes to the Vacuum regulating valve. It branches off there and leads to a few things1)spark retard delay vlv, efe/distr tvs. I really can't see in here because it's so tight.


How is it best to tackle this? Eliminate all the unnecessary vacuum lines or do it the way the diagram shows? I'm open to either.

Q: Does it make sense to plug some lines so the van runs better? It doesn't have to pass emissions anymore

Before anyone asks, I'm doing this only because I knocked a few lines off when doing a water pump repair and it's idling too high now.

Link to the vacuum hose diagram from under the hood: