Not all batteries are created equal.

来源: 车遭殃 2015-02-17 18:01:58 [] [旧帖] [给我悄悄话] 本文已被阅读: 次 (2711 bytes)
本文内容已被 [ 车遭殃 ] 在 2015-02-17 18:09:37 编辑过。如有问题,请报告版主或论坛管理删除.
Suggest you check that you have a battery that is rated for whatever you car calls for, especially in Cold Cranking Amps (CCA).

AND fully charged.

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The main three reasons will make your car harder for starting in colder weather: Beside defective battery, alternator or parasitic draw on the battery itself:

Reason 1 - Gasoline, like any other liquid, evaporates less when it is cold. You have seen this -- if you pour water onto a hot sidewalk it will evaporate a lot faster than it will from a cooler place like a shady sidewalk. When it gets really cold, gasoline evaporates slowly so it is harder to burn it (the gasoline must be vaporized to burn). Sometimes you will see people spray ether into their engines in cold weather to help them start -- ether evaporates better than gasoline in cold weather. I would not recommend doing that just buy fuel additives for cold weather and pour into the fuel tank will help.

Reason 2 - Oil gets a lot thicker in cold weather. You probably know that cold pancake syrup or honey from the refrigerator is a lot thicker than hot syrup or honey. Oil does the same thing. So when you try to start a cold engine, the engine has to push around the cold, gooey oil and that makes it harder for the engine to spin. In really cold places people must use synthetic motor oils because these oils stay liquid in cold temperatures. In South Bay? You just have to switch to a thinner oil. Ask your Auto part store for the right thinner oil for your car.

Re?ason 3 - Batteries have problems in cold weather, too. A battery is a can full of chemicals that produce electrons. The chemical reactions inside of batteries take place more slowly when the battery is cold, so the battery produces fewer electrons. The starter motor therefore has less energy to work with when it tries to start the engine, and this causes the engine to crank slowly.

All three of these problems ?can make it impossible to start an engine in really cold weather. People either keep their cars in heated garages or use "block heaters" to get around these problems. A block heater is a little electric heater that you plug into the wall to keep the engine warm. A battery blanket/ Warmer, A trickle charger for less than $20 from your Auto part store will also be a plus in addition to the 3 reasons I've mentioned above. HTH

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thanks -yahwawa- 给 yahwawa 发送悄悄话 (0 bytes) () 02/17/2015 postreply 18:18:51

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