power brake booster testing
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Senior User
Joined: Feb 2006
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power brake booster testing
Hey all,
is there any particular method of testing the vacume of a power brake booster? Or do you simply replace the whole assembly? I have a post in another section and a member suggested my booster may be bad, allowing brake fluid to be sucked into my engine (causing smoke)
I can get a reman booster for something like $70, so if its a long drawn out PIA process to test the booster, I'd just as soon replace the thing and eliminate it as a culprit
1980 F-150, 302, c-6, 4x4
Dave S
is there any particular method of testing the vacume of a power brake booster? Or do you simply replace the whole assembly? I have a post in another section and a member suggested my booster may be bad, allowing brake fluid to be sucked into my engine (causing smoke)
I can get a reman booster for something like $70, so if its a long drawn out PIA process to test the booster, I'd just as soon replace the thing and eliminate it as a culprit
1980 F-150, 302, c-6, 4x4
Dave S
Elder User
Joined: Jan 2004
Posts: 561
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From: houston
What does the smoke smell like. I have seen this happen only once. The smoke has a smell all its own. I don't know of anything that smells like it. Also you would have to loose quite a bit of fluid into the booster for it to get sucked into the engine. The canister would have to be Half Full. Get a piece of wire with a small loop on the end, attach a piece of paper towel to it and stick it into the canister and swab the bottom. This will tell you if there has ever been fluid in there. Good luck.
PS Again, once you smell brake fluid burning you will never mistake it for anything else.
PS Again, once you smell brake fluid burning you will never mistake it for anything else.
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
If you are burning fluid, your booster would be FULL of brake fluid. You would hopefully have wondered where all this fluid was going at some point in the past. To test the booster, get a vacuum pump. If it holds vacuum, it's good.
