i have installed a set of denso iridium iw24 plugs in my bmw 635 turbo('87 cartech turbo system).the problem is upon cold starting a plugs tend to gas foul ,sometimes they start to fire after a few min. or i have to remove and clean.i think i've gone with to cool of a plug.also i have a hot msd ign. spark.any thoughts on my problem would be appresiated. thanks kevin
Re: plug problems
Are you in a cold climate? If not I would unplug the cold start injector. We have had that problem on BMWs but not on other cars, we also recommend using standard (not platnum or iridium) NGK or Denso(or a plug of your choice). It cost less and you have the choice of gaps.