in the s2ki tech section:
"I'm using bosch platinum 4 spark plugs"
https://www.s2ki.com/forums/index.php?showtopic=326331


would not normally go pernoid but a work peep had a spark pulg fail with bad results.

 

Are this the ones with the 4 points of contact? If so, I experienced lots of problems with these. They burn VERY hot. I ended up replacing them.

 

from the thread pic no

 

The thread pic was of the iridium plugs. I was referring to the Bosch plat 4 plugs. Perhaps I mis-read something.

 

Wow! Thanks for the link. Looks like I'll be taking a look at my Denso Iridium plugs in my Prelude tomorrow. My car isn't FI but I'll still be taking a look.

Kyle

 

That is a very uncommon failure for plugs despite the manufacturer. it usually is a result of the plug being dropped before installation and creating a tiny crack. Heat and vibration make the crack larger over time. I have seen it several times on many different brands of plugs. I use and sell IK plugs and havent seen a similar failure in at least a few years.

 

only use for platinum or iridium is to extend the life of the plug, reduce maintance. this appears not possible due to their current construciton.

swaping out the junk ir plugs.

 

Tobi i used IK24 (a step colder) when i had nitrous, am i ok now that i dont have nitrous? Or should i switch back to IK22's?

 

I wouldnt exactly call them junk. I ran them in my hatch and put 50k on them without a problem.


Simon, it wouldnt hurt to go back to the hotter plugs.

 

how about these ...... i was thinking of swapping my denso iridz for these ..... I am prolly bored and want to just change them to get my ass out in the garage.

http://www.inlinefour.com/spoons2irrac.html