Quote:
Originally Posted by bennelson
Hmmm.
My power brakes are set up so that the pump runs to about 20 inches. Anything above 10 or so seems to make the brakes run fine.
The connection between the vac pump and the guage is a few feet long, running through the firewall.
Is it possible there is some sort of a clog? Or something with the brakes unrelated to the vacuum?
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There could be a clog, I will have too inspect the booster setup. There are no leaks because it will hold the vacuum for quite some time, but I have been told that the small tube I am using for the connection might be collapsing, causing the low readings. I am going to try a different, beefier tube and test it out again. Right now I am using a small, clear plastic tube that might only be rated to 14 or 15 PSI, so 20 Hg of vacuum might not work out so well.
I think my pump is coming on too late, like around 8Hg instead of something more useful, like 13-14 Hg.