Who used Denso Iridium?

[Africatwin]

Today got a shock from my denso iridium plugs. Went to change a set of spark plug cables. On the spot the shop owner show me 3 sets of cables, one above average, one superior n mine. Although my cables are thick n flexible but the sparks produce is not as good as his normal black looking cables, so hand itchy changed the full set to his. After changing problem came, my car idling start to have problem so thought the spark plug not compatible n change the plugs. At the end of it realise is the sequence is wrong.

But this is not the main problem. Feel lucky he did put in the wrong sequence and when he took out the plugs i got a shock. Its so black n i changed it only a month ago. It look as if it had been in there for a year. I m a very light footed, dun chiong when light turn green. maximum speed on e'way is only 110km/h. Dun know y all 4 plugs are so black. For those who are using iridium do check it more often.

[Dwoon]

Perhaps you're using too cold a rating, that's why its carbon coated. Moreover, you dun wack the car to clear.....

[Africatwin]

Are u using denso? Wat's the part number for ur plug?

[Phochem]

tink shld b carbon deposit, chk the heat range of ur plug and ur air filter if its dirty. I indicates a rich mixture or weak ignition problem.

[Africatwin]

Honestly i doubt its the carbon, its not the whole plug that is black only part of it n the top part which is made of plastic is turning black also. After i showed the plugs to my colleague, one of them also said his very black after 3 months but not as bad as mine. Now trying out the bosch super 4. If it turn as black as the denso then can confirmed its my car but if its still clean then something is wrong wif the plugs.

[Gadgeter]

I have had the same problem before and was using a denso.

 

As for my case, it was because I have lost of compression..

[Etnt]

Used denso's before and checked them at 15k and 30k usage. Both times, the color is a light tan. Dun think should have problems so long as correct plugs are used for the car.

[Africatwin]

So are u still using denso? Using bosch super 4 not bad........

[Africatwin]

ay i know the number u are using?IK 16 or IK 20?

[Gadgeter]

I'm using stock plugs now.. cheap and good.

[Starian]

I used IK 20 on my 323 1.6l, so far didnt manage to see the plug as I ask MM to change the plug for me, do you have any idea how long to replace the plug? I heard that it ard 30k, is it correct?