Codes showed misfire in several cylinders after replacing plugs and coil packs s on 2003 Honda Accord

Still running rough cleand erg cencor now what should be cheched

by in Council Bluffs, IA on April 01, 2013
2 answers 6 comments
ANSWER by on April 01, 2013
4 or 6 cyl.? Auto or manual?
COMMENT by on April 02, 2013
6 it's a 3.0 misfire in 5 it's new. Random miss in 2 4 6 all new too have also cleaned the erg censor auto
COMMENT by on April 02, 2013
Hopefully you're using a scanner? Unplug EGR (electrical) and see if any change in misfire. Could be faulty valve.
ANSWER by on April 02, 2013
rec. fuel system clean. ethanol treatment to 1 tank premium. ethanol blend in fuel causes build up in fuel system(possibly fouling injectors), combustion chambers, exhaust system and causes increased wear to spark plugs. fouled injectors can cause a misfire. injectors need to spray mist to fire properly. fouled injectors lose spray and tend to squirt(firing inconsistently: misfire). result will take drive time. hope this helps.
COMMENT by on April 02, 2013
Have unplugged erg and cleaned it Well also have put in the regular gas, gas mileage is very poor right now. Scanner shows the hard misfire in 5 and slight in 2,4,6
COMMENT by on April 02, 2013
Is this a true scanner with live data or a code reader?
COMMENT by on April 02, 2013
I believe a code reader
COMMENT by on April 03, 2013
Live data would be more helpful , with a case like this. Might want to have a shop scan it while it's running , to see what's going on.