according to my energy provider--you should if you are leaving home for more than 1 week.
If valve is damaged, it'll need replaced. Depending on what kind of valve, it just may need a wrench to turn handle to open. If not sure, call a plumber who should be able to help.
This is the holiday I enjoy the most.
Yes, you should turn it off.
To turn off a gas cylinder, first ensure you are in a well-ventilated area and wearing appropriate safety gear. Locate the valve on top of the cylinder and turn it clockwise until it is fully closed. If the cylinder has a pressure regulator, make sure to turn that off as well. Always check for leaks after closing the valve by using soapy water; if bubbles form, seek professional assistance.
There should be a configuring switch on your water system, i.e water tank or well.
There should be a mark on the distributor or it's switch plate that indicates where the rotor should point for cylinder 1. If you look at the distributor from the front of the vehicle, the closest center position should be for cylinder 2. Clockwise 1/8 th turn from that should be cylinder 1 position, but double check against the indicator mark that should be present.
Turn the faucet handle to the left to get hot water.
There are two (2) torque screws that hold the cylinder itself onto the car. Remove both and the cylinder should fall out. (this is the hard way) Remove one (1) Torque screw, bottom. Then turn the key to the ON position (not running) and then press the tab that holds the cylinder in and the cylinder itself should fall out. (this is the easy way)
yes
air in the water lines causes banging and whistles/screams. Turn off main water, turn on the faucet, turn main water back on, and it should force the air out.
Your water pump should run off of the serpentine belt. there shouldn't be a separate belt for the 4 cylinder. if you change the serpentine belt, there is a belt tentioner in the middle. using a wrench, not a ratchet(the ratchet will not have enough room to fully turn the tentioner), turn all the way to the right, remove the worn belt and replace it with a new one, following the belt diagram on the inside of the passengers side fender.
Insert the key and turn it to the run position. Under the column there is a small hole that you insert a small punch or a pin up into and press a pin on the cylinder to release it from the housing. If the cylinder is siezed and will not turn, then you are in for a real job. You have to drill out the tumblers to get it to turn. You need to somehow turn that cylinder to the run position to get it out.