12 Volt vacuum pump problem
AS FAR AS THE CHECK VALVES, ALL THE SYMBOLS THAT AREA CIRCLE WITH A V IN THEM ARE NEW CHECK VALVES, THE IDEA IS FOR THE ENGINE VACUUM TO BUILT UP THE VACUUM AS THE PRIMARY SOUCE OF VACUUM AND THE ELETRIC PUMP MAKE UP THE DIFFERENCE SO THE PUMP DOES NOT HAVE TO WORK/RUN AS LONG TO KEEP 18 INCH OF VACUUM. I MAKE JUST TAKE OUT THE EXTRA RES. AND RUN STRAIGHT TO THE BRAKE BOOSTER TO SEE IF THAT TAKES CARE OF THE PROBLEM