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Discussion Starter #1
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 ???
 

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

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tdi power
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13,297 Posts
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
 
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