Hi guys
Replaced the plugs, no difference. When removing the old ones, noticed that 1 and 3 had a sooty coating and 2 and 4 were nice and brown. Also replaced fuel filter.
Dizzy cap looked worn after cleaning and testing, with some slight burn markings on 1 and 3 contacts.
Ordered a new cap and rotor arm.
Plug leads had good resistance.
Is this likely to be an idle control problem? Not sure which is the idle control valve.
The car is an import 2.2 vtec, original engine etc, no mods
Car starts no problem, but won't idle at all and stalls once your foot is off the pedal.