noise

Thanks for reading, everyone. I need some help troubleshooting a hard contact "bang" noise when my 87 GN goes through a steep dip (for example a transition joint on the highway between bridge and pavement). It only happens when the car has 2 or more people. The noise sounds like it's metal on...

Hi guys, I just converted to a vacuum brake system and I'm wondering if its normal to hear a pressurized air escaping noise when I depress the pedal? :confused: Edit: The air sound is very similar to that of an old bike tire pump. Like, psssshhhh. You can only hear it during the travel of the...