How to turn a stepper spray to become a vacuum pump.
It can suck several automotive fluids, such as old gasoline in the reservoir flex, brake fluid, hydraulic fluid, ....
Example of use:
FLEX GASOLINE RESERVOIR
http://www.youtube.com/watch?v=h-0nquSgpBE&feature=share&list=UUqzDCpZIeuRPhqbWy-tyccA&index=2
BRAKE FLUID
http://www.youtube.com/watch?v=7apSQi6vadA&feature=c4-overview&list=UUqzDCpZIeuRPhqbWy-tyccA