[Yella]

OK I bought a set of NGK iridium plugs, I fitted them as per guidelines and all went well.

Now 1 is not firing until the car is at optimum running temp once at that temp it is fine, But 20 mins running around with a misfire is a ball ache.

Would you deem that plug to be faulty (as I think it is) I refitted the old plugs today and all is well.

The trouble is I really don't want to go through the hassle of going through all 6 plugs 1 by 1 to find out which one it is ( would take ages)

Should I ring seller and explain what has happened and ask for a new set ???

 

[poohpants]

i got some and had no probs so i would assume it was fualty

 

[Poirot]

with car running remove one plug from the coilpacks, if the engine note drps to stall repeat until you find one that makes not difference it its pluged in or not...thats the faulty plug

 

[iansr33]

i second what t f s said as thats what we did with another members car when the insulation broke down on his ngk plugs causing it to earth out and not fire

 

[Poirot]

its more fun doing it with the old HT lead ign system types

 

[mooser]

its more fun doing it with the old HT lead ign system types

ha ha, made me jump many a time....