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Spark plug help

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Old Nov 8, 2013 | 02:44 PM
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From: Tyler Tx
Default Spark plug help

Got my code reader in and plugged it into the car to check codes.Only one I got was a misfire in cyl.3.Started yanking plugs out and they need to be replaced.The ones that are in there are NGK TR6.Called the parts store to see if they had them and the guy said that AC Delco OEM plugs are better.Could someone tell me what is the best plug or a better plug to use...thanks.By the way,my Vette is an 05 that is supercharged.

Last edited by mrhandy; Nov 8, 2013 at 02:49 PM.
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Old Nov 8, 2013 | 04:45 PM
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Use the LS9 plug in your SC car. ZR1 LS9 .040 AC 41-104 = NGK heat range 6

That's what I'm using and it's perfect.

Elmer
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Old Nov 8, 2013 | 05:44 PM
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From: Tyler Tx
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Thank you sir.
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Old Nov 9, 2013 | 06:42 PM
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it would not be a bad idea to check compression on #3 cylinder also. you may also want to swap plugs from one cylinder to another and see if the misfire moves.
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Old Nov 10, 2013 | 09:40 PM
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From: Tyler Tx
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Replaced plugs on Sunday and car is ready to get out there and rule the road.Thanks for your help.
Michael
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