Well does anyone know how much vaccuum the pump is suppose to run. I put a gauge on my vaccuum pump and it runs to -12 and turns off. After leaving it sitting for a little while and checking the gauge it doesn't seem to leak any and I can't find any leaks. The pump goes to -12 pretty quick and cuts off. Anyone know how much vaccuum it is suppose to have? Im wondering if it my pump now just not giving enough vaccuum.