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Brakes suddenly don't work

Old September 19th, 2012, 5:37 PM
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Default Brakes suddenly don't work

1994 Chevy S10 pickup V8

Today we lifted the bed of the truck (into a dump position), held it there with wooden supports while removing and replacing the fuel pump. The fuel pump works, but now we have no brakes.

While the engine is running there is a hissing noise, and strong air (like a vacuum leak) coming from where the master cylinder bolts to. It looks like a missing (hose? cap?).

Any ideas what we may have done, and how to fix it?
Old September 22nd, 2012, 6:52 PM
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sounds like the vacuum hose from the intake to the booster is off, don't understand how it came off working on the other end of the truck?
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