That is a great idea, I will go and see what I can find as soon as I get some spare time. Hmmm. I may have stumbled upon a problem there...
Mine were the platinum plugs, and lasted 80,000kms and were installed in mid 2003. They should easily last 100,000 but in my opinion a combination of sporadic car use the past few years and a fairly serious overheat last January caused one of them to prematurely end their life. But don't rule them out as a possible cause of your issues unless they are quite new!
They are new enough that I would consider it unlikely. They are about 3000kms old and if the service record I got with the car is accurate the previous ones laster 95000kms before the CTS went on me and they got killed by the car running way too rich to compensate. I might pull them out and have a look when I get some time anyway. I have never done it before and it is probably a useful thing to learn.
3000k old would mean they are unlikely to be the cause then (unless the issue occurred when they were changed in )
Or one of them was just dodgey out of the box. Or any number of other things that could possibly go wrong that I have never heard of. I will have a go at taking them out and having a look when I have some time. Even in the (likely) case that they are fine it will be something else I have learnt how to do.
More things to check! Leaking intake pipes or other hoses, how about the connectors on the IAAV. I had similar issue and it turned out to be a leaking hose on the intake side between the engine and the afm. MattB
Thanks. I am putting together a nice list of things to do when I get some time, hopefully next weekend. I figure given the age of the car, anything I check up on and replace will be useful even if it is not the cause of my current problem.
