help what to do cylinder misfire 1, 2, 3, & 4 2001 honda civic ex
could it be because since i brought the car i only put 93 gas in it 60,000
miles later i put 89 in it by mistake could that have caused the misfire or its just time for a coil change. oh yea i changed my plugs and the misfire is still coming up on the computer i don't know what to do

help me please

 

have you even looked at your spark plugs yet? My car was misfiring and i looked at my spark plugs, and 3 out of the 4 were burnt up. By the way never buy E3 spark plugs from jcwhitney, they are junk. I bought them in august of 05 and had to change them out february of 06. You may want to atleast start there.

 

i changed to ngk plugs i hear they run good in honda

 

yeah ngk are good plugs, right now i have bosch platinum 2 which are pretty good. If you've already checked your plugs, i'm not sure what it would be to cause all your cylinders to misfire.

 

could it be bad gas

 

Why were you wasting your money on 93 octane gas in a presumably stock Civic EX? :eh:

 

you get better mileage and in the long run its better for the car

 

:lmao:

NGKs come stock in Civics. :chuckles:

Wrong, you actually get worse mileage because the engine temperature increases because the fuel burns hotter so the ECU compensates by retarding timing. I got worse mileage and less power from the highest octane available on my stock motor. h:

 

ok my bad so what can i do to fix my problem

 

Check your ignition from the dizzy to the spark plugs.