Denso Iridiums, Total Poop!

[Captain Cupra]

Found this a few weeks back and it needs highlighting!! so I fitted some Denso IK22's and gapped them to 0.7 (.028) about 8 months ago, was having a slight misfire problem at peak boost and hitting a slight power flat spot, all parameters were fine so pointed in my eyes at plugs, I'd already wanted to change them for the preferred plug by the masses on many forums for the mapped 1.8t the NGK bkr7e, so I'd pre purchased these ready to swap in,

Now I wasn't really prepared for the gap that had developed on the plug over time but it was pretty much 3 times what it should have been, that'll be the misfire for sure, look..

So it pays to check your plug gap and in future I won't be using iridiums or Denso it's a con these plugs were near on a tenner a pop where as the ngk £3 odd, already the car feels superb no misfire no flat spot!

Just thought I'd share that...

Jim

 

[Captain Cupra]

The surface of the probe is pitted n grooved too, this isn't great for 8 months what 4000 miles driving, not good at all, they say you shouldn't re gap these bit you can if done the right way, they say this to stop you damaging the fine electrode tip but at standard gap running stage 2 it'll misfire for sure.

 

[Steely]

I wouldnt use anything but conventional copper based plugs now. Ran plats and iridiums for 18 months

Since going back to normal plugs i have next to no timing pull or floating idle.

And only 12 quid a set!

 

[JDUB 20V]

I used to use NGK BCR8ES in my MK2 Golf 1.8t, worked out to under £10 for all four plugs and the car put power out very well!