My 2000 4door honda accord EX 4cl with ABS lost brake pressure while driving. I checked my brake reservoir and it was empty but i didn't see any leaks. I refilled the resivoir, pumped the brake pedal and got pressure and still no leaks. Why did i loose brake pressure and fluid?

 

When was the last time you checked the fluid level?

I once lost pressure and eventually found out that the square washer in the front caliper was leaking. It happened only once and that it kept working even though it still was leaking. In other words you need to check everything. The fluid may leak internally through the brake booster and get burned in the intake.

Check for wetness around calipers. Check for wetness around wheel cylinders.

If the fluid is getting burnt in the intake you will see whit smoke out of the exhaust.

Good luck,
Sam