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Old 03-31-2026, 01:54 PM   #1
Ziegelsteinfaust
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Spark plug quality

Had anyone had issues with Autolite spark plugs being absolute garbage recently?

I had 2 sets in my truck that barely made it 4000 miles before 4 left the chat in each set.
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Old 03-31-2026, 04:11 PM   #2
Shifty One
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Re: Spark plug quality

With First Brands falling apart, they're not likely to get better.

Go NGK.
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Old 04-01-2026, 12:20 AM   #3
RustyPile
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Re: Spark plug quality

Quote:
Originally Posted by Ziegelsteinfaust View Post
Had anyone had issues with Autolite spark plugs being absolute garbage recently?

I had 2 sets in my truck that barely made it 4000 miles before 4 left the chat in each set.
Describe, "Left the chat"... Explain the failure...
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Old 04-01-2026, 11:57 PM   #4
Ziegelsteinfaust
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Re: Spark plug quality

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Originally Posted by RustyPile View Post
Describe, "Left the chat"... Explain the failure...
Internal failure of.electrode.
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Old 04-02-2026, 07:29 AM   #5
Dead Parrot
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Re: Spark plug quality

2nd what Shifty One said. Lots of allegations of wrong doing by First Brands C-suite folks. Very possible that to keep the gravy train rolling, substandard(cheaper) ingredients were used in various First Brands factories. Autolite is a First Brands company. Last I read a few weeks ago, the bankruptcy plan for First Brands included shutting down the Autolite division.

Probably best at this point to pick a different supplier.
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Old Yesterday, 04:27 PM   #6
kwmech
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Re: Spark plug quality

Quote:
Originally Posted by Shifty One View Post
With First Brands falling apart, they're not likely to get better.

Go NGK.
I've had issues with NGKs lately excessively wearing down the electrode in record time. I've changed over the Denso plugs in the Toyotas I work on. My GM trucks still get Delco plugs
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Old Yesterday, 04:52 PM   #7
Shifty One
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Re: Spark plug quality

I hadn't heard that about NGK yet, but I like Denso as well. (I sell both brands)
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Old Today, 11:12 AM   #8
leegreen
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Re: Spark plug quality

There are lots of counterfeit plugs out there of all brands, particularly for the higher end models of plugs (iridium, platinum etc). So if they were bought online from ebay or a noname seller on amazon and priced well under what a reputable place online would sell them for and maybe coming in cheaper looking packaging....

there are fakes of everything from candy bars to purses to the bolts that hold Boeing wings on. At the end consumer level it is hard to protect yourself
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