I've got a 98 discovery that is misfiring or stuttering when it's hot. It runs great when its cold. I've already replaced the Plugs, HT leads, Distributor cap and rotor arm for Landrover parts. The one thing I've noticed is it's arcing over a couple of contacts on the coil! ( had a look in the engine bay while it was dark! ) Could this be the problem? If so is it a new coil or is it the new lead I've fitted? Any help much appreciated! :beer: cheers!!!