Which Spark Plug ?
Thread Starter
Intermediate
Joined: Dec 2016
Posts: 35
Likes: 8
From: Stonybrook NY
Which Spark Plug ?
Random misfire P0300 on 2001 Procharged at 7 psi and 17k miles, gonna replace plugs and wires (Original ? ) . The Procharger book recommends a Copper plug, one range cooler .....any insight as to brand and part number ?
Thanks CJ
Thanks CJ
Last edited by Fsharp9; Jun 13, 2017 at 04:48 PM.
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the million dollar question, are the plugs the cause of the misfire?... I think the tr6 plugs will be better than what the op has now regardless but there could be a bunch of other causes for a random misfire... when did it first start happening?... was it immediately or soon after the car had parts installed or tinkered with?
Thread Starter
Intermediate
Joined: Dec 2016
Posts: 35
Likes: 8
From: Stonybrook NY
the million dollar question, are the plugs the cause of the misfire?... I think the tr6 plugs will be better than what the op has now regardless but there could be a bunch of other causes for a random misfire... when did it first start happening?... was it immediately or soon after the car had parts installed or tinkered with?
Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Do a resistance test of the spark plug wires. A stock LS1 Plug wire should read 300 ohms to 750 ohms end to end. If they are reading very high the spiral wound nickel wire inside is broken and can very likely cause the misfire.
While the wire is out, examine the boots, the wire and,,, the metal connection metal terminals inside the boots and inside the coil.
If they are green corroded or damaged, the wire is bad.
I highly recommend the GM Performance red wires. Best band for the buck! They work exceptionally well, fit properly and have high quality materials.
Bill
While the wire is out, examine the boots, the wire and,,, the metal connection metal terminals inside the boots and inside the coil.
If they are green corroded or damaged, the wire is bad.
I highly recommend the GM Performance red wires. Best band for the buck! They work exceptionally well, fit properly and have high quality materials.
Bill
Last edited by Bill Curlee; Jun 14, 2017 at 03:17 PM.
Thread Starter
Intermediate
Joined: Dec 2016
Posts: 35
Likes: 8
From: Stonybrook NY
All better now, Wires were Delphi/Packard original and the plugs were also original and apparently never gapped correctly for the Procharger. I went with the red GMPP wires and the NGK TR6 gapped at .035 .....runs like new, Thanks for the insight !
Now I just have to wait for all the nicks and cuts to heal ..........WTF !
Last edited by Fsharp9; Jun 19, 2017 at 01:57 PM.
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