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  Topic Review (Newest First)
04-16-2019 12:03 PM
willy92
Quote:
Originally Posted by Ripster View Post
Sorry, why would you replace wires that aren't defective? Wires don't wear out and you car drives well. Plugs, I get, wires, I don't.
This is simply not true. Wires do wear out due to heat generated under the hood and if nothing else, are usually damaged when they are removed to replace the spark plugs due to sticking to the spark plug insulator, due to heat.

So, in other words, you have them off, in your hands...why wouldn't you replace them?
04-16-2019 11:10 AM
copacetic1
Quote:
Originally Posted by copacetic1 View Post
Bought last week from Walmart website; get $24 AC/Delco rebate and youíre set with 8 GM OE iridium plugs for $12.50, shipped.




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Got my $24 rebate Saturday, less than 2 weeks from submitting the form online.


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04-11-2019 11:42 PM
Ripster Sorry, why would you replace wires that aren't defective? Wires don't wear out and you car drives well. Plugs, I get, wires, I don't.
04-07-2019 12:52 PM
SS_Scott
Quote:
Originally Posted by SilverSport View Post
I thought Platinum or Iridium plugs were still copper core but had those precious metals on the tip only...

Bill
Yeah just the tips. Keeps them from wearing out, pushing 100k.
04-07-2019 11:59 AM
carkhz316 Gee whiz, thats a stellar deal. I thought I was doing well when I bought a set for the truck last fall from Amazon for $45. I still got the rebate, so they ended up being all of $21 for the set, which is still great.
04-07-2019 11:04 AM
copacetic1
Spark plugs/wires

Bought last week from Walmart website; get $24 AC/Delco rebate and youíre set with 8 GM OE iridium plugs for $12.50, shipped.




Sent from my iPhone using Tapatalk
04-07-2019 06:54 AM
SilverSport I thought Platinum or Iridium plugs were still copper core but had those precious metals on the tip only...

Bill
04-06-2019 03:51 PM
CB750
Quote:
Originally Posted by z51vett View Post
I thought those iridium plus cause trouble of course this was a while back as in nearly a decade old memory kicks in every now and again. CB 750 chime in if you know.
z51vett
Doug
When iridium first came out and were installed on cars that had copper/conventional plugs as OEM they caused a rough idle. This was/is no fault of the plugs; the ignition system was not designed for them.

Good memory

Edit: The same as when switching to platinum plugs when you car originally came with conventional/copper.

Always use specified plug composition and heat range. Custom builds may require a change in heat range only; but be very careful when changing heat ranges.
04-06-2019 12:32 PM
good2go
Quote:
Originally Posted by z51vett View Post
I thought those iridium plus cause trouble of course this was a while back as in nearly a decade old memory kicks in every now and again. CB 750 chime in if you know.
z51vett
Doug

Most of the complaints I've heard about iridium plugs had to do with the center electrode breaking off (and the collateral damage that caused). The primary reason for them breaking off is improper technique when gapping the plugs, i.e. you CAN NOT pry open a gap by wedging against the center and ground electrodes- PERIOD! For this reason, lots of folks say you cannot gap iridium plugs at all, but there is a way with the right tool that is indeed possible to gap the plugs. It just must be done by solely levering on the ground electrode without contacting the brittle center electrode at all.


04-06-2019 11:37 AM
W88fixer
Quote:
Originally Posted by z51vett View Post
I thought those iridium plus cause trouble of course this was a while back as in nearly a decade old memory kicks in every now and again. CB 750 chime in if you know.
z51vett
Doug
I have no knowledge regarding that but the iridiums are OEM for the G8GT.

As I said, the car is running beautifully but new plugs and wires should keep it that way. Will have to pay more attention to mileage and see if that improves? Don
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