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Reply to "Brake booster won't hold vacuum, should I rebuild/replace it?"

I did not actually count the number of pumps that it took to get to 15 inches vacuum but it was a lot.  I continued to pump once it leveled out at 15 inches and did not get any more vacuum.  I am thinking there may be a leak.  My next step is to get the car warmed up and then check manifold vacuum with the booster connected and then with it disconnected and the manifold capped off.  The vacuum reading should not change.  If it increases with the booster disconnected then there's a leak.

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