由买买提看人间百态

boards

本页内容为未名空间相应帖子的节选和存档,一周内的贴子最多显示50字,超过一周显示500字 访问原贴
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BMW X5 发动不了
cylinder 1 misfireRe: 请教. engine flooded?
Cylinder #1 misfire, Code P0301怎么判断是不是该做tuneup了?
求助:2005 nissan altima 热车打不着火How much to fix this problem? 98 Corolla
Help,车打不着火了车刚打着火,engine震的厉害,怎么回事?
Re: Remote Starter问题。请教车子启动的问题
相关话题的讨论汇总
话题: spark话题: compression话题: diagnosis话题: start话题: fuel
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)
相关主题
请教车子启动的问题Cylinder #1 misfire, Code P0301
今天是悲剧的一天求助:2005 nissan altima 热车打不着火
请问车早上点不着火怎么办啊?(纽约)Help,车打不着火了
[求助]车的引擎灯很诡异地时亮时灭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BMW X5 发动不了
cylinder 1 misfireRe: 请教. engine flooded?
相关话题的讨论汇总
话题: spark话题: compression话题: diagnosis话题: start话题: fuel