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
That would be a perfect vacuum. Drive 'er straight up 120 miles and you'll have approaching zero vacuum. As the engine operates camshaft timing and cylinder leakage would never allow anything close to 14.7 psi differential pressure. 1" hg mercury is very little "pressure".
