Hi Pete,

>>>>I am not one of those who subscribe to the idea that a car will mis-behave on a certain make of plug unless it is the old Split-fire plugs that were around a few years ago! I prefer NGK then Bosch and if I found a car with a problem like yours with Champions in, they would be the first thing to ditch (un-reliable).<<<<

Interesting comments if not rather contradictory, Unless the certain make in question is NGK!

I have no doubt in my mind that NGK have had problems with their spark plugs emmitting excessive RFi, this problems seems to be more prevailant on PSA, Renault and Fiat cars. I have wasted many Hrs on problem cars in the past to end up fixing with a set of FR7DC plugs or +8s as they seem to call them now. Even where the correct part no as listed in the latest NGK catalogue of the time is already fitted to the vehicle.

If you don't believe me just ask tony Sefton!!!.

Mike