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My 2001 civic LX is fantastic, I love it, but lately it seems the car is dragging as if it doesn't have the power it used to have. I realize its not the fastest car but it just doesn't have the pep it used to. I've replaced the spark plugs so i know its not that. not sure what to look into to try and fix the problem. I also just bought some injector cleaner. any ideas guys? thanks for the help!!!!

 
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when is the last time you changed the air filter ?

 
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On a side note, what plugs did you put in it?

 
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When you feel this dragging, are you running the Air Conditioning?

 
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I just changed the air filter today and it seems the same, im planning on putting in a short ram intake . and no, i prefer to have the windows down when i can, but it doesnt make a difference when its on or not. and a friend of mine gave me some performance plugs that go to my car. someone told me it may be one of the "coils"? not to sure what that is or how ill know if one of them is bad, thank you guys for all the suggestions!!

 
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nothing changes with the ac on or off

 
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my buddy bought me performance plugs the are bosch plugs.

 
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I just changed the air filter and it feels the same

 
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Bosch plugs are no good. NGK iridium plugs are what you need.

Did it have this issue before changing them? What plugs came out and how old were they?

Is the CEL on or blinking?

 
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no the issue just started happening recently, thats why i dont think its the plugs. the plugs that were in before were old and dinghy. not sure what cel is.

 
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Take it to your local auto parts store & have them read the codes. (Free)
This will point you in right direction and save you time.

 
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check engine light

 
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Check money light.

$$$.¢¢

 
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hahaha very true!

 
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you definitely need to check for codes. how many miles are on the car maybe you need a new primary o2 sensor.

 
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haha no my money light (check engine) light isnt on but i will go and have my car scanned and see what codes may pop up i appreciate all the ideas.

 
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As for the Bosch plugs, I had a Bosch platinum fail completely in that the ceramic snapped. I was damn lucky it didn't end up dropping free into the cylinder. Car was down a cylinder and running like crap. Took it in and they pulled the plug and it was completely snapped in two for whatever reason at the ceramic tip. The L prong was the only thing keeping it from being a complete disaster. I DO NOT RECOMMEND BOSCH. They could care less when I sent them what happened.

 
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yes never use bosh plugs in a honda or any japanese car only NGK or DENSO.

 
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I'm going to say never use EVER. They were in a '98 Merc Tracer when it failed. That car was a money pit.

 
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yes never drive a '98 Merc Tracer the only reliable domestic cars i have ever owned were slant six engine's.

 
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It is kinda sad that you would mention a engine that hasn't been installed in a car since 1983(trucks 1987). Honda is what chrysler was during the 1960's. They made very good reliable engines even by todays standards. They had terrible tolerances during manufacturing and the engines just ran and ran for years on the very poor quality fuels that were available. I still have a slant valiant waiting on me to work on it and finish putting it back together.

Of course I wouldn't even consider anything from ma mopar since the early 90's

 
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You need Air, fuel, spark and compression... and some sensor data, but with no CEL I wouldn't guess that in an issue of the bat.

First I would rent a compression tester


easy cheap things to check

-Check your ground wires
-get a good two part fuel injector cleaner... not the $9 bottle you put in the gas tank, lol.
-change engine oil
-plugs
-airfilter
-idle relearn

harder things
clean your throttle body

 
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I just purchased an 06 Civic EX with 144,000 that had rough idle at start. I replaced the NGK plugs with Bosch iridium plugs. The car ran great for about 200 miles. Then began a very intense misfire. We changed the plugs out again with another type od iridium plug. Car idles at start, but once its warm begins a random misfire. Can you advise?

 
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Put the proper NGK plugs in

 
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This.

Also is the CEL on? How do you know it is mis firing?