Quote:

I installed a summitt vacuum can resev on my Cuda 340 - I plumbed it as follows, from intake to check valve on can, brass fitting on can to checkvalve on power brake booster. For some reason it is not working ! The brakes are rock hard, If i disconnect the can and go direct to the brake booster the brakes work, I added the can since i have approx 12-13 hg at idle !

Do I need to remove one of the check valves ?



this is the right way to do it. To check it, disconnect the hose from the brake booster and start the car. you should feel vacuum at the end of that hose. Plug it back in to the booster check valve and it should work.

give it some time to build up vacuum. rev it up and down a bit