Probably not. Is it missing? If so unplug injectors one at a time if one of them makes no difference suspect the injector, if they're all about the same the fuel pressure regulator may be flooding the engine.
Possiable but i suggest checking the firing order there are two possiable correct configurations for the 99 model year. Depending on engine model code stamp .
SOURCE: 01 taurus v6, chugging @idle & acceler. engine light blinking
Drop in to autozone, or Pep boys and have it scanned, free, for trouble codes then go from there. Could be something simple & cheap
SOURCE: 1996 Honda Accord Rough Idle Even After tune up
Perform a valve clearance inspection and adjust if necessary. Tight or sticking valves will cause a misfire or rough running concern. Note: Perform valve adjustment when the engine is stone cold. 4cyl: INT 0.26mm EXH: 0.30mm (V6 engine are hydraulic and no adjust necessary.) Also check for a sticking or stuck open EGR valve. For diagnostic purposes only: Remove the EGR valve. Place a business card over the EGR passage and bolt the EGR valve back on. This plugs the EGR ports and if the misfire goes away the EGR valve is partially stuck open and is defective.
Check for low fuel pressure. Check for low compression. Check cam timing. Check for a weak ignition coil. Also don't over look the possibility of worn or broken engine mounts which cause excessive engine movement and engine vibration. -hope this helps
SOURCE: show picture of spark plug firing order honda
1993 Honda Accord 2.2 liter SOHC L4
or
1993 Honda Accord 2.2 liter SOHC L4 (VTEC)
Hope this helps (remmber to rate and comment this).
SOURCE: Honda Accord 1994 Rough Idle, often miss cylinder
A check on the spark plugs of the 2nd and 3rd cylinder must tell the story. If you see there is a dirty plug, oil soaked or badly burnt we need to check on the firing and fuel delivery.
First of all check for compression if there is oil smearing, it can be due to weak oil rings or compression rings or a faulty bore in case the engine has clocked a great deal.
Also check the valve settings before the firing - spark intensity of the 2nd and 3rd plugs are confiremed. Check the HT wires to the plugs as you have checked the remaining sections. I hope this must give an indication of the lurking fault.
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