chilling_pete

Hello everyone, This is my first post and before you all say anything I have already looked through this forum, researched before posting.

I drive a 2005 Honda civic ex with about 117k miles on it. Last week my car would not accelerate well and shake, jerk, hesitate in away if I drove faster than 45 mph. a check engine light came on a few days later and autozone said it was an misfire on cylinder 3. I pulled out the coil and it was burnt. After buying new set of coils, my engine runs a lot smoother than before. How ever after 3 days it starts jerking again at high speeds but not as strong as it once was...any suggestions? Thank you.

chilling_pete

Forgot to mention that i got my spark plugs replaced at 100k so they only have about 17k on them.

ezone

What code does it have this time?

chilling_pete

The engine light has not come on yet.

ezone

Does it jerk and miss mostly while holding a steady speed (maybe anywhere from 35 to 55 ish), and act normal (stop the jerking) if you accelerate hard?

lowlife9

did you replace the plugs yourself ? what brand of plugs did you use?

chilling_pete

That is correct when holding a constant speed its okay but sometimes when i go faster than 60 it does not want to it starts to shake.

chilling_pete

I did replace them my self. I bought them from amazon, the coils have made my car run smoother.

ezone

That's completely opposite of what I was thinking....

He asked about the spark plugs, not the coils.

What kind of spark plugs were installed at 100k?
Have you pulled out the spark plugs to inspect them yet?

See if there is any evidence of carbon tracking on the insulator, shown below:

chilling_pete

Oh sorry I misread that. I honestly dont know when i bought the car I got my mechanic to change my timing belt, alternator, water pump and sparkplugs. ill take them out and see what brand and if any carbon build up.