Hello!
I have a 73 Custom Suburban with a 2v 400 and I havea low flow of vacuum from the manifold to the brake booster. It is around 20 hg on idle but its a low amount of flow, The flow in the vacuum line from the carb to the pcv is much greater. When I pull the line to the brake booster on my 68 Fury the engine stumbles and dies but not on my 73. The problem I have is the vacuum to the booster is not enough but the booster is not leaking because it holds vacuum after I shut off the...
Vacuum problem
