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If there is no fluid coming from the brake line, there are two possibilities: 1. there is no damage in the brake line, merely air in the brake line. 2. The brake fluid may already be completely depleted.

To find out, get some water with a bunch of dish soap in it, but try not to make a lot of suds. Pour the water over the whole brake line and watch the line while someone pumps the brake pedal. If bubbles form, then there's the hole. No bubbles? Air in the line or perhaps damage in the master or slave cylinder.

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Q: How do you find a hole in a brake line when no fluid is coming out. it does not have a slave cylinder and the master cylinder was just replaced.?
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