> Why?
>> > Gotta have more info to help you man, What type of plugs?? You really need
>> > a double platinum plug for that motor.
>> >
>> >
>> >
>
> The plugs were changed at a Ford dealership, but the wires were
> changed at local garage. If it turns out not to be the problem with
> the wires or plugs, where else should we look?