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Automobile版 - a good article on "no-start diagnosis" zz(3)
相关主题
a good article on "no-start diagnosis" zz(1)ignition timing control discussion
引擎misfire一般要检查那些地方啊?汽车踩油门时的叮叮声是怎么回事?
车打不着火,求助今天是悲剧的一天
cylinder 1 misfire[求助]车的引擎灯很诡异地时亮时灭
Cylinder #1 misfire, Code P0301福特大金牛在 怠速时候少许抖动是怎么回事?(follow up)
求助:2005 nissan altima 热车打不着火engine light亮了,带速时震动很大
Help,车打不着火了天气一热启动不正常
Re: Remote Starter问题。BMW X5 发动不了
相关话题的讨论汇总
话题: spark话题: diagnosis话题: start话题: fuel
进入Automobile版参与讨论
1 (共1页)
b****i
发帖数: 108
1
Spark
If the cranking circuit has passed the appropriate tests, it's time to conce
ntrate on why the engine won't run. There are four areas of concern-spark, f
uel, compression and timing. The easiest test to start with is usually the o
ne for the ignition system. On older systems, it's convenient to remove a co
il wire, then use a spark tester to test for proper spark. An adjustable spa
rk tester is preferable to a fixed design because it allows you to adjust th
e tool to a smaller gap, which w
b****i
发帖数: 108
2
Fuel
Fuel system diagnosis can be broken into two parts-the fuel delivery system
and the injector electrical circuit. Just as the ignition system has primary
and secondary components, the fuel system has command and fuel delivery.
Command, or the injector electrical circuit, is usually diagnosed with a sca
n tool and a DSO. A noid light, which is plugged into the wiring harness in
place of one of the injectors, is not a good test. While convenient, this to
ol does not put the proper load on the
b****i
发帖数: 108
3
Compression
You can test engine integrity with a compression gauge, but the starter's cr
anking speed will give a trained ear an indication of low cylinder compressi
on. If you hear a fast-cranking engine, test the compression to see where th
e problem is. Low compression does not always indicate an internal engine pr
oblem.
After identifying low compression, a leakdown test is a good follow-up step.
On some engines, it may be convenient to check cam timing before engine com
pression. This depen
1 (共1页)
进入Automobile版参与讨论
相关主题
BMW X5 发动不了Cylinder #1 misfire, Code P0301
Re: 请教. engine flooded?求助:2005 nissan altima 热车打不着火
How much to fix this problem? 98 CorollaHelp,车打不着火了
请问车早上点不着火怎么办啊?(纽约)Re: Remote Starter问题。
a good article on "no-start diagnosis" zz(1)ignition timing control discussion
引擎misfire一般要检查那些地方啊?汽车踩油门时的叮叮声是怎么回事?
车打不着火,求助今天是悲剧的一天
cylinder 1 misfire[求助]车的引擎灯很诡异地时亮时灭
相关话题的讨论汇总
话题: spark话题: diagnosis话题: start话题: fuel