The OP asked a question- what should be done next?
> Replace coil pack?
> I suggested that some further diagnosis would be in order, and only threw
> in the observation about the coil pack to reinforce it to the poster; I
> did not say that it was IMPOSSIBLE that the coil pack was bad, but I felt
> it unlikely. Jim's "correcting " me did absolutely nothing to help the > poster.
Well, actually it did. It let him know that even though he only has one dead cylinder he shouldn't rule out a coil pack contrary to what you said.
If anything, it only added confusion.
> Bad information? You are a funny guy.
Bad, wrong, incorrect.... call it what you want...
You might notice in my first reply that I asked for some background
>information that would help someone guide the poster to the next step, for
>example, if we as a group knew that the poster replaced the plug because it
>was fuel fouled, and the other plugs were ok, there might be a problem with
>that particular fuel injector .
>
> Ya with me on this?
With that I couldn't agree more.
>> Ted, if you don't like to be corrected don't give bad information. >>
>>> Actually, a faulty coil pack can result in a single cylinder misfire >>>
>>> Jim, I don't need to know this, I am not the one asking the question-if
>>> you want to say that the coil pack could be at fault, please respond to
>>> the original poster.
>>>
>>>> Actually, a faulty coil pack can result in a single cylinder
>>>> misfire.... if one end of the secondary winding is shorted to ground or
>>>> has weak insulating properties, the other plug can still fire. I know
>>>> it sounds like one of those "can't happen" things... but it does.... >>>>
>>>> For the original poster.... what should be "done" next is what should
>>>> have been done "first".... For the DIYer, some simple testing using a
>>>> spark tester and a known good wire would suffice... The idea behind DIY
>>>> repairs is to save money... not offset labour costs by "shotgunning" >>>> parts...
>>>>
>>>>
>>>>>A coil pack would cause two cylinders to misfire, not just one. Sounds
>>>>>like your next step is to check for a vacuum leak, then compression
>>>>>test. It would also be helpful to know what kinds of diagnostic
>>>>>equipment you have at hand, and any specific test results you have,
>>>>>particularly what led to diag of secondary ignition. Oh yeah, year and
>>>>>engine size could be helpful.
>>>>>
>>>>>
>>>>>> Got code for misfire #1 cylinder. Plug wire and plug have been >>>>>> changed.
>>>>>> I think there is a coil pack on this engine.
>>>>>> what should be done next?
>>>>>> Replace coil pack?
>>>>>> Thanks in advance for replies