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93 civic dx 4dr cyl#3 no spark or miss firing

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Old Nov 7, 2011 | 04:59 AM
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Default 93 civic dx 4dr cyl#3 no spark or miss firing

ok so i have a stock 93 civic 4dr dx,d15b7,cylinder #3 has no spark
i've changed wires,plugs,injectors,clips,and nothing,wtf is going on?need help.. EVERYTHING WORKS BUT ITS MISS FIRING,i grounded the plug wire and theres spark but its not doing anything in the cylinder??????????help
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Old Nov 7, 2011 | 06:35 AM
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Default Re: 93 civic dx 4dr cyl#3 no spark or miss firing

ANYONE PLZ
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Old Nov 7, 2011 | 08:08 AM
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Default Re: 93 civic dx 4dr cyl#3 no spark or miss firing

Does it have spark or not? Is the injector firing? Misfires can also be caused by low low cylinder compression.
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Old Nov 7, 2011 | 10:43 AM
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Default Re: 93 civic dx 4dr cyl#3 no spark or miss firing

NO SPARK BUT SWAPPED OUT THE INJECTOR TO ANOTHER CYLINDER AND IT WORKED ON THE OTHER CYLINDER
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Old Nov 7, 2011 | 03:36 PM
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Default Re: 93 civic dx 4dr cyl#3 no spark or miss firing

Originally Posted by low13da9
NO SPARK BUT SWAPPED OUT THE INJECTOR TO ANOTHER CYLINDER AND IT WORKED ON THE OTHER CYLINDER
Plug a spark plug into the spark plug lead and ground the plug and see if you get spark, if not the problem must be the spark plug lead, distributor cap or rotor, pull the cap and inspect inside of cap and rotor for carbon arcs. 94
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Old Nov 7, 2011 | 07:25 PM
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Siriuswerks
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Default Re: 93 civic dx 4dr cyl#3 no spark or miss firing

If you have the spark plug in the spark plug wire and you place it about 1/2 and inch away from the header, header bolts, valve cover bolts. Now do these to all of them and if you have spark missing on anyone of them take your distributor cap off. and post up a picture. Remember 3 things have to be on point Fuel, Ignition, and Timing
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Old Nov 8, 2011 | 01:16 AM
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Default Re: 93 civic dx 4dr cyl#3 no spark or miss firing

Originally Posted by low13da9
i grounded the plug wire and theres spark but its not doing anything in the cylinder??????????help
This is what I don't get. Sounds to me like its getting spark if you've tested it this way. How do you know its not getting spark "in the cylinder"? Have you checked compression in all 4 cylinders?
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Old Nov 8, 2011 | 04:01 AM
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Default Re: 93 civic dx 4dr cyl#3 no spark or miss firing

Compression and leakdown test.
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Old Nov 10, 2011 | 01:16 AM
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Default Re: 93 civic dx 4dr cyl#3 no spark or miss firing

Also did you put the spark plug wires back in the proper order?
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