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Curve ball #5417324 04/30/20 12:55 PM
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SteveSRT8 Offline OP
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So one of my newest trucks needs plugs. With 40k miles!

This despite being AC/Delco iridium fine wires. Completely shot, worn to the insulator!

I have run these plugs 200k miles in other vans but not with the new 6.0 with VCT.

Can anyone explain how the interval was shortened so drastically?


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix
Re: Curve ball [Re: SteveSRT8] #5417326 04/30/20 12:57 PM
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Barkleymut Offline
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pics?


09 Vue 2.4L 4spd AT/ 09 Flex 3.5L / 96 F150 5.0 5speed / 07 Mustang GT auto
Re: Curve ball [Re: SteveSRT8] #5417329 04/30/20 12:58 PM
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Barkleymut Offline
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Are you the person driving the truck? Maybe you have a wannabe Nascar driver on your hands smile


09 Vue 2.4L 4spd AT/ 09 Flex 3.5L / 96 F150 5.0 5speed / 07 Mustang GT auto
Re: Curve ball [Re: SteveSRT8] #5417347 04/30/20 01:30 PM
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Do you have a multi spark ignition system? Those fire several times per cycle so could wear out quicker.

Re: Curve ball [Re: SteveSRT8] #5417376 04/30/20 01:53 PM
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slacktide_bitog Offline
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Are all 8 shot and worn like that? Do they look worn but otherwise no problems?

Re: Curve ball [Re: SteveSRT8] #5417426 04/30/20 02:33 PM
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Kestas Online Content
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It may not be the plugs themselves, but something with the engine that is off... i.e., spark timing, air/fuel mixture.

Re: Curve ball [Re: SteveSRT8] #5417454 04/30/20 03:02 PM
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supton Online Content
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Bad batch of plugs? Maybe they made a lot (as in a production lot) with substandard metal.


2011 Toyota Camry, base, 2.5L/6MT, 205k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 159k, ours
1999 Toyota Camry LE, 2.2L/4AT, 225k, his
Re: Curve ball [Re: SteveSRT8] #5417478 04/30/20 03:33 PM
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ripcord Offline
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Were these factory plugs or Amazon/eBay purchases? There are a LOT of fakes on the market. The scammers will take a cheap plug, turn down the center electrode to make it look like a thin wire plug and weld a new tip on.

Re: Curve ball [Re: SteveSRT8] #5417543 04/30/20 04:47 PM
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Snagglefoot Offline
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Originally Posted by SteveSRT8
So one of my newest trucks needs plugs. With 40k miles!

This despite being AC/Delco iridium fine wires. Completely shot, worn to the insulator!

I have run these plugs 200k miles in other vans but not with the new 6.0 with VCT.

Can anyone explain how the interval was shortened so drastically?


Please send us a pic of the worn plugs, also showing us the AC Delco plug model numbers. I suspect the wrong plugs were put in. I got 180,000 miles on a set of AC Delco plugs and they were still running great. They were the ones from the factory.
smile

Last edited by Snagglefoot; 04/30/20 04:47 PM.

If you want the job done right......do it yourself.
Re: Curve ball [Re: SteveSRT8] #5417553 04/30/20 05:02 PM
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01rangerxl Offline
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Is this a L96 engine Express/Savana?

Even under the severe service schedule, 97,500 miles is the interval for the plugs. I'd say either a bad batch if they are all like that, or it may have some sort of hidden problem that needs to be diagnosed.


2002 Ford Ranger XLT | 3.0 V6 Auto 2WD | 239K miles
1994 Ford Ranger STX | 4.0 V6 Manual 4X4 | 203K miles
1994 Ford Explorer XLT | 4.0 V6 Auto 4X4 | 256K miles
Re: Curve ball [Re: ripcord] #5417643 04/30/20 06:48 PM
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spasm3 Offline
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Originally Posted by ripcord
Were these factory plugs or Amazon/eBay purchases? There are a LOT of fakes on the market. The scammers will take a cheap plug, turn down the center electrode to make it look like a thin wire plug and weld a new tip on.



Could be this. I need to pull a plug from my truck as i bought iridiums on amazon.


13 elantra 84k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 19000 miles m1 0w30
Re: Curve ball [Re: SteveSRT8] #5417779 04/30/20 09:16 PM
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clinebarger Offline
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Interesting, I haven't seen anything extreme with the NGK made Delcos outside of 1 or 2 plugs, Certainly not all 8 at such low mileage & the VVT 6.0L has been out since 2007 in the GMT900 platform.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: Curve ball [Re: SteveSRT8] #5417874 05/01/20 12:45 AM
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daves87rs Offline
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Betting bad plugs


2020 Chevrolet Trax LS
2019 Chevrolet Equinox LS
2006 Chevrolet Cobalt LS
2004 Chevrolet Cavalier (project)

Re: Curve ball [Re: SteveSRT8] #5420497 05/04/20 06:13 AM
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SteveSRT8 Offline OP
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trying to post pics, coming soon!

I tell ya, I've had a ton of these trucks and this is the worst set of plugs I have ever seen in 48 years of driving and fixing cars or trucks!


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix
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