V8 cold start

I have a misfire shortly after start-up from cold on my 2000 RR4.0 which
lasts around 30 seconds regardless of ambient weather conditions. It has had
a new set of Leoni plug leads fitted along with new plugs around two years
ago. What's the life expectancy of these? Any precautions to take or
anything else that could be causing this problem?

Thanks

David

"David Haggas" <[email protected]> wrote in message
news:[email protected]...
> I have a misfire shortly after start-up from cold on my 2000 RR4.0 which
> lasts around 30 seconds regardless of ambient weather conditions. It has
had
> a new set of Leoni plug leads fitted along with new plugs around two years
> ago. What's the life expectancy of these? Any precautions to take or
> anything else that could be causing this problem?
>
> Thanks
>
> David

Check for misfire faults using testbook / rovacom etc, if it's 2 cylinders
that share the same coil pack, it'll more than likely be the coil pack
breaking down. It's fairly common. They are paired 1/6, 8/5, 4/7, 3/2.
Badger.