vacuum test
Can someone tell me what it means when setting idle and you punch the gas and the needle on the vacuum gauge doesnt go all the way to 0.What does this mean?I have reved it as high as 3000rpms and it d...
Forum Discussion
I haven't done gasser tuneups for over 40 years and they were all carbs then. I doubt if you'll ever see 0 but 10" doesn't sound low enough either. The Autolite and Holley carb kits came with an 8.0 power valve and I would put in a 6.5 to help with mpg. The 8.0 meant the power circuit started opening at 8.0" hg. I would think the lowest would be more like 4-5" or there about. Craig
