The round vacum ball under hood can someone tell me what it does and how it works?
Don't know if I'm going to word this correctly or how much vacuum it holds but after the car has been driven for a while unplug one of the lines. You should hear air rushing in to replace the vacuum. At least that will tell you that it's not cracked. But obviously be sure that your lines and connections are in good shape first.Thanks for the feedback guys. Just a couple more questions should the ball have as much vacuum on the side going to the controls or more? Other than storing vacuum does it give more vacuum on control side. And also how can I test it without a vacuum gauge I am a RV Tech. And I don't know if the mono-miter that I have for checking for propane leaks in a motorhome or a bus would work on something so small.