Spark plugs? Which ones to use? - Pontiac G6 Forum
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post #1 of 17 (permalink) Old 06-03-2013, 11:17 AM Thread Starter
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Spark plugs? Which ones to use?

What spark plugs have you guys ran in your car? Are these cars even worth going a step colder? The wifes car has 46k on it but they are 4 yrs old so i might just replace them anyway.

thanks


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post #2 of 17 (permalink) Old 06-04-2013, 04:16 PM
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Thanks for askin i would also like to know and what wires to use as well. In desperate need of a tune up!
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post #3 of 17 (permalink) Old 06-04-2013, 06:32 PM
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I dont think going a step colder will make much difference in a normally asperated engine.
as for plugs many people including myself run with NGK Iridium IX plugs. Im pretty happy with mine.
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post #4 of 17 (permalink) Old 07-13-2013, 12:44 AM
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NGK Iridium IX with Autolite Professional wires.

I just did mine and they worked perfectly (make sure you check the gap).
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post #5 of 17 (permalink) Old 07-13-2013, 01:32 AM
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There's a new bosh Iridium plug that's out that really has a performance jump between the NGK's and they're about 1 dollar cheaper than the NGK's for me. There's the most iridium in them, and they laser weld the tip so there's no micro cracks or anything. I work at a parts desk and we just got these in, I don't know how new they are but they're supposed to hold a better spark longer than the NGK's. I think the part number is #9601http://www.boschsparkplugs.net/product.aspx?zpid=8216


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post #6 of 17 (permalink) Old 07-13-2013, 11:03 PM
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Seem to be pretty nice but I only paid 7.09 for each plug so the savings doesn't really matter much. No matter which ones you go with, if you haven't done this in a while (or ever) DO IT. I can't stress this enough, it seemed to fix some starting issues I was having and my six seems so much more peppy now.
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post #7 of 17 (permalink) Old 07-18-2013, 05:41 AM
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I use NGK Iridium plugs in my Triumph T100 and what a difference. I'll use similar plugs in my G6 when the time comes. I believe the stock plugs had a life of ~80-90K miles in the G6? From what I recall the dealer said the tune up won't be due until 160,000kms, but I won't wait that long!

'11 Ram SXT 4x4 quad cab - 5.7L V8; 128,200kms
'09 Malibu 2Lt 3.6L - 140,000kms purchased 1 March 2019

'06 Pontiac G6 GT - 3.5L V6; 162,000kms (rear ended 15 Feb 2019, and given totalled title by insurance)
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post #8 of 17 (permalink) Old 07-18-2013, 03:51 PM
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If youre gonna get NGK spark plugs get the Laser Iridiums (ITR4A15) not the Iridium IX's (TR55IX). The Iridium IX's are actually a heat range colder than the stock ones. Laser Iridiums are the stock ones, same part number ITR4A15 is stamped on the AC Delco plugs. Also FWIW the Laser Iridiums have a service life of 100,000 and the Iridium IX's are 60,000.

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post #9 of 17 (permalink) Old 07-19-2013, 02:09 PM
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Good to know, thanks.

I'm dreading to change the back plugs. One of the downsides of a transverse V6.


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'11 Ram SXT 4x4 quad cab - 5.7L V8; 128,200kms
'09 Malibu 2Lt 3.6L - 140,000kms purchased 1 March 2019

'06 Pontiac G6 GT - 3.5L V6; 162,000kms (rear ended 15 Feb 2019, and given totalled title by insurance)
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post #10 of 17 (permalink) Old 07-19-2013, 03:53 PM
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Quote:
Originally Posted by 360ci View Post
Good to know, thanks.

I'm dreading to change the back plugs. One of the downsides of a transverse V6.


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They dont seem so bad, Ive done some that were worse before. Ill be changing my plugs either this weekend or next though so Ill let you know how that goes

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post #11 of 17 (permalink) Old 07-19-2013, 10:19 PM
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60 degree V6s have a front motor mount right on top that bolts to the core support. When you remove that mount you can rotate the whole engine forward to get down in the back. I don't think the V6 G6s have this mount, but maybe theres a way to rotate the engine forwards and free up some room...
As for me a plug job is a walk in the park
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post #12 of 17 (permalink) Old 07-19-2013, 11:49 PM
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Yeah. I changed all 6 of mine after work in like 30 mins. Shouldn't need to rock this engine. Now the old lumina Z24 (or what ever it is) is a mist. I have smaller arms and hands and that's still a tight squeeze.


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post #13 of 17 (permalink) Old 08-01-2013, 10:05 PM
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I'm going to try out the new bosch plugs. Does anyone have any recommendations for wires?
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post #14 of 17 (permalink) Old 08-01-2013, 11:14 PM
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Quote:
Originally Posted by AnconaGT View Post
I'm going to try out the new bosch plugs. Does anyone have any recommendations for wires?
Thought you had a 3.6? If so you have coil on plug so you don't have any wires :lol:

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post #15 of 17 (permalink) Old 08-02-2013, 08:57 PM
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This is true I just looked at it today and was like wtf is going on lol. But the new bosche plugs has anyone used them?
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