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Old 03 Nov 2011, 02:46 pm
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Default Misfire on cylinder 4 in Honda civic si?

What's does that mean? My car shakes a little and when it's cold it starts shaking but when it heats up it's fine cuz it's ganna be 550 bucks to fix cuz they Told me to change all of the coils and spark plugs you think it will help it and it shakes when you turn it on but when you riddle it to 1 it stops thanks
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Old 03 Nov 2011, 03:01 pm
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it's likely the coils aren't bad... use a spark tester to determine if you have spark on the #4 cylinder, if there is spark, then all you need is a new spark plug... get a second opinion, take it to another shop if you can't fix it.
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Old 03 Nov 2011, 03:16 pm
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I would follow what Frank said, take it to a Honda Technician to repair.
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Old 03 Nov 2011, 03:31 pm
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start by checking each individual coil, check the resistance in the coils and see how many you need















you dont have to buy all 4. And for the sparkplugs just get them in a import parts store their usually cheaper than your regular autoz-- or checkers--- where i live the name is BAP imports .
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Old 03 Nov 2011, 03:46 pm
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you need to get the car tuned, hondata flash pro is a great way to do that, and you can get a used flashpro for about 500, add another 100 for the tune, and you will probably fix the issue, as well as have a tuning program to make more power, better mpg, and even out your AFR, ignition timing, cam angle, vtec engagement, all that. well the flash pro is for 06-11 civic si, if you have an older civic, hondata prob makes a tuning program for it, and it would probably be cheaper then.. changing the spark plugs is always a good deal, and consider buying aftermarket coil packs, as they will help with mpg and power being as it will burn the fuel more effectivly.
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Old 03 Nov 2011, 04:01 pm
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usually that just means the #4 coil needs to be changed but you could go ahead and do all the spark plugs just to be safe. if you get a code that says intermittent misfire then you would need a full tune up or even a distributor if its b-series engine.
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