Turn the ignition key on today’s engines with computerized engine management systems and electronic fuel injection, and go. No need to even warm up the engine. Most of the younger generation don’t know what it is to “pump the gas” and a choke is as foreign as a telephone with a rotary dial. However, even modern engines can fail to start when the temperature dips to sub-zero levels.
Preparation is key to insuring a vehicle will start on a frigid day. If its been awhile since you did a tune up, do one or have one done. New points, condenser, spark plugs, and even spark plug wires are a good investment that will reduce starting problems.
If its been awhile since you read the owners manual or the vehicle is new to you, get it out and review the recommended starting procedure.
Probably the biggest reasons for cold weather “no starts” is a weak or dead battery. If the battery is more than five years old or has been subjected to a couple of complete discharges, replace it with a new one. When replacing go for the most cold cranking amps - the colder weather expected, the higher CCAs needed. Check the water level before cold weather sets in. Adding fresh water on a very cold day could cause the battery to freeze. Finally, check all the electrical connections and make sure they are clean and tight.
Of course, make sure antifreeze will provide protection at the lowest temperatures expected. If you live in really cold climates, install a block header to keep the engine warm and ready. Though not quite as effective as a block heater, a dipstick will help. Use the lowest viscosity motor oil recommended by the manufacturer. If allowed, change to SAE 5W-30, or even SAE 0W-30, motor oil for easier cranking in extreme temperatures.
Make sure you have a full tank of fresh gasoline. Gasoline that sits too long can go stale, though today’s gasolines are better in this department. Consider adding a fuel-line, anti-freeze additive to the tank of gasoline.
If the engine doesn’t start immediately, don’t keep cranking for more than about 20 seconds. Wait about 40-seconds before trying again to let the battery recover. Not only does extensive cranking put a huge demand on the battery, it can damage the starter or overheat the battery cables so much that they can even melt. If you can’t start after a few tries, stop and find the source of the problem. Continuing can only deplete your battery.
