On Average, a normal 6-8 week old puppy's potty schedule will go something like this: For the first 3 to 4 nights he will wake up every two hours and need to go potty. If he goes to bed at 10:00 pm he will wake up around midnight, 2:00 am, 4:00 am and 6:00 am in the morning. As you are crate training a new puppy for nighttime, don't hesitate, get up and take your puppy outside to go potty.
To provide the extra fuel, a choke is typically used; this is a device that restricts the flow of air at the entrance to the carburetor, before the venturi. With this restriction in place, extra vacuum is developed in the carburetor barrel, which pulls extra fuel through the main metering system to supplement the fuel being pulled from the idle and off-idle circuits.
The modulator is attached to the outside of the transmission case and has a shaft which passes through the case and attaches to the throttle valve in the valve body. When an engine is under a light load or no load, high vacuum acts on the modulator which moves the throttle valve in one direction to allow the transmission to shift early and soft. As the engine load increases, vacuum is diminished which moves the valve in the other direction causing the transmission to shift later and more firmly.