Wei Hu wrote:
>
> Hi,
>
> Today I replaced the six spark plugs of my 94 Ford Taurus.
> However, when I stop for red lights, the car shakes every one or two
> seconds.
> Does anybody know the reason?
> Could it be that I didn't adjust the gap?
>
> Thanks,
> Wei

Add to what Shep said:
Possibly destroyed a wire or several while changing plugs.