Spark Plug Heat Shields
Race Director
Joined: May 2012
Posts: 15,768
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From: Phoenix area, AZ
I'd check the wires to see if any of the plug wires are arcing, and if no visible arcing I'd check to make sure all of the plug wire connections are tight between the plugs and ignition coils. If that fails you could check each of the plugs to see if any are fouled. Also make sure that you did not break or knock any vacuum lines loose and that all of the electrical connections are tight.
Melting Slicks
Joined: Oct 2007
Posts: 2,798
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From: It's true money can't buy happiness, but it is more comfortable crying in a Corvette than on a bicyc
St. Jude Donor '13
My guess is you cracked a plug or damaged a wire. When it gets dark start the car and look for arcing around the plugs and wires.
Le Mans Master
Joined: Sep 2007
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From: Belleville Il
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Le Mans Master
Joined: Jun 2008
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From: Rockledge FL
Apparently that happens a lot with MSD. I got yelled at a lot once here for relating my experience with them but yeah pretty much the same thing. They looked and felt like they clicked on but not so much. That is why the electrical gurus here recommend the GM wires. Cheaper than MSD, positive clicks when installed and just plain works. No wire is going to increase performance so why go with something where there is room for error?
Thread Starter
Cruising
Joined: Sep 2007
Posts: 13
Likes: 0
Yes I used dielectric grease. I went with recommendations from fellow members and installed AC Delco plugs 41-110(iridiums). When I checked online for AC Delco plugs for my 2000 vette, all that came up was 41-962(platinum). Did I use the wrong plugs? I did send an em to AC Delco tech support asking them what plugs that I need. It might take several days for them to respond if they do at all. Special thanks to all Senior members that took the time to respond.
Thread Starter
Cruising
Joined: Sep 2007
Posts: 13
Likes: 0
I only did a basic check of wires. I've been waiting for AC Delco to respond first. Since you said that the 41-110s are okay, I'll tackle the wires and heat shields on Sunday. Thanks again.
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I personally would put the heat shields back on - I did that when I changed the plugs and wires on my '00.
Drifting
Joined: Jan 2004
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From: The heartbreaking shame of pink stars Kentucky
Thread Starter
Cruising
Joined: Sep 2007
Posts: 13
Likes: 0
Do the heat shields get installed first before pushing on wire? I tried reworking the wires and just sled the shields onto the boot, then pushed the boot onto the plug, but the shields are not snug.
Instructor
Joined: May 2010
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From: San Benito TEXAS
Burning Brakes
Joined: Feb 2007
Posts: 1,211
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From: Vancouver B.C.
I destroyed the heat shields getting my original wires off the plugs (I swear they were glued on with rubber cement) I replaced the stock wires with Magnecors without heat shields; no static no problems. I changed plugs recently and the wires are still in great shape.
Team Owner
Joined: May 2001
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Same here. I haven't run plug shields in years. No ill affects.
