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Discussion Starter #1
Wanting to go with ACDelco Iridiums, but the ones I see on RockAuto are listed as being gapped to .043 inches, which doesn't jive exactly with the .04 listed in the 2005 2.2 owner's manual.

So my question is, should I

1) Buy and use them anyway, as they are,

2) VERY CAREFULLY change the gap on them to .04 inches,

3) Buy a different brand of Iridium (I see some attractive Denso Twin-Tips that claim a .04 gap), or

4) Buy the ACDelco Double Platinums on RockAuto with the .04 gap?
 

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Your car should use ACDELCO PRO 41-105 dual iridium(OEM GM#12607280). These come pregapped and 3/1000 of an inch isn't going to make a difference.
 

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I just did the spark plugs on mine not to long ago, I used the ACdelco iridium pregapped and everything is good.

A little tip; Be careful when you remove the coil pack. If you pull a bit harder from a corner it will snap! Pull it out slowly from all the angles till it gets loose. I know because it happened to me...
 

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Your car should use ACDELCO PRO 41-105 dual iridium(OEM GM#12607280). These come pregapped and 3/1000 of an inch isn't going to make a difference.
Also, you can't gap iridiums anyway.
 

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You can but you need a special tool not readily available. I know the local dealer has one, it looks like a big microscope that surgeons would use.
 

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Discussion Starter #7
Does the danger in gapping iridiums come from damaging the pointy electrode when you measure the gap, or from damaging something while trying to increase/decrease the gap?
 

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Yes and the little piece on the tip too.

 
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