The Serious FresheningGo to <Last, Summary, Next>Engine—Manifold Vacuum Test
Completed: 2006-08-27 — Started: 2006-08-27
Work Completed: Lynn notes that periodically (about every 60-90 seconds) the vacuum abruptly drops to about 10 inHg briefly (about 5-10 seconds) then returns to the nominal level. He believes that this signals that the Stewart vacuum pump is actively pumping, using the manifold vacuum to draw fuel from the gas tank into the fuel pump. At the same time the idle noticeably roughens. Lynn expects that this is just the normal operating behavior of the fuel pump.
Work Remaining: Contact with your comments or questions Copyright © 2018 Lynn Kissel Last updated: May 24, 2009 |