Coil problems

[big tim]

Had some ruff running issues with my 3.9v8 s1 disco.Things started off about a week after fitting some brit part ht leads.It started to be quite lumpy at idle managed to get home and changed the dizzy cap and rotor the problem was stiil there so i changed the coil lead back to my origanal one that sorted it out.ON further investigation i noticed the coil lead had a brown mark where it had been arcing out .Brought some more leads from local motor factors and replaced coil lead all was fine till last night the lumpy tickover was back.Managed to get to work and back just once home got bonnet up and noticed the coil lead arcing out on the top hose again took cable ties off and it then started arcing from both the terminels on the coil to boot on the coil lead.Help. :x   

[Guardian.]

ON THE V8 use only genuine leads and dizzy caps,or have endless problems.
and as for shi, i mean britpart, umm.

[big tim]

She is purring like a kitten again now.Replaced leads,dizzy and rotor with lucus items.Thanks for the advice chap.

[Range Rover Blues]

Lucas, such as it exists, probably make the best parts available for the V8.

That said you could be seeing the results of an underlying problem somewhere, the spark will find the easiest path to earth so perhaps your plugs need attention too :?, my advice, don't fit resisted plugs.

[big tim]

What do you mean by a resisted plug. what are good plugs to fit to the v8.Cheers tim

[jjsaul]

NGK are usually a pretty good bet on rover v8's....dont fit the 4 pronged ones though, just stick to standard decent quality ones.
As suggested earlier in the thread, lucas stuff is about as good as it gets for leads / caps / rotor arm etc without spending a fortune.
If you're going to replace the coil, try the Lucas DLB105 Gold coil, they give a higher voltage output on the HT side, they do work, especially if running LPG.
The only improvement with leads is ones such as the Magnecor ones, but at £80-90 a set they're a bit pricey  :shock:

[stageonesimmo]

I know its boring, but, you need to keep on top of the gaps as well - makes a hell of a difference especially at start-up when cold.  I used to keep a spare set of plugs, I'd pull the 'old' ones out, pop in the fresh set then re-gap the 'old ones which then became the new ones and so on... every couple of months