Im having some trouble figuring out the sounds my car is making. Every morning when i turn on the car i can hear the sound of some liquid passing through near the pedal, im guessing its the gas but why is it doing that?

Im having some trouble figuring out the sounds my car is making. Every morning when i turn on the car i can hear the sound of some liquid passing through near the pedal, im guessing its the gas but why is it doing that?

could be coolant in the heater lines being pumped through by the water pump