NEED HELP !!

Wife drove her 2003 honda accord v-6 to work everything was fine. Went to leave 8 hours later and check engine was on and car was running bad (missing ). Borrowed a code reader and it shows all cylinders are misfiring and random misfire.
Car has 140k and has been well maintained, timing belt and w/pn done at 110k. Plugs also done then.
Any ideas will help.

 

When was the last time the ignition coils were replaced?

It could also be the Crankshaft or Camshaft position sensor that has gone bad causing the car to misfire.

 

What codes were presented? P030X?. Anything else?

A failure in COP would be noted by one cylinder missing. All or most COP failure would prevent starting. Random miss is usually something w/ fuel or air.

What plugs were installed? OEM or other?

good luck

 

i had the same problem. tried replacing everything else: plugs, coils, injectors. nothing worked until i found out it was a couple valves not seating well. need to tear into the motor and get a valve job

 

I would double check the plugs. I had a problem on another car like that. Did a full tune up. At the time I did that used sea foam in the intake/oil/gas. Ran just fine for about a month then got so clogged up with deposits being removed that it would not run. Replaced plugs again and oil change and good to go.