Black Bandit Vacuum pump install

[dmarr35]

I installed a Black Bandit Vacuum pump to run the power brakes the problem I am having is the pump cycles on and off about every 5 sec I plugged the hose at the Booster pump stays off the Booster is new the valve is new and testing seems to work I pumped vacuum in the booster and after a few min it still popped when I pulled out the valve I am not sure but somehow the Booster has to be losing Vacuum somehow even though it seems to hold anyone come across this Than k You.