Uncle John....but the plugs may be crap now.....
do you gap iridium plugs?
Thread Starter
Melting Slicks
Joined: Apr 2008
Posts: 2,118
Likes: 2
From: Redding CA
do you gap iridium plugs?
hey guys i was wondering if your supposed to gap iridium plugs. i was told by the shop i bought them from that you are not supposed to and they come pre gapped. i also bought the most expensive wires they had which were power max blue wires. the more i look into it seems like the wires are crap and my car idles bad when at optimum temps.
Tech Contributor
Joined: Jan 2007
Posts: 19,493
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From: Dyer, IN
hey guys i was wondering if your supposed to gap iridium plugs. i was told by the shop i bought them from that you are not supposed to and they come pre gapped. i also bought the most expensive wires they had which were power max blue wires. the more i look into it seems like the wires are crap and my car idles bad when at optimum temps.
Plugs and wires are discussed on this forum often. GM replacement wires are a no brainer for stock to 800RWHP cars. No advantage whatsoever with aftermarket wires.....other than color options...
Pro
Joined: Oct 2005
Posts: 738
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From: Richmond VA
The factory claims that they don't require gapping. If you do decide to pull them out an re-gap them, please be sure to use the proper gaping tool so as not to destroy your new plugs. Also, I seriously doubt that any damage has been caused to your engine.
Tech Contributor
Joined: Jan 2007
Posts: 19,493
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From: Dyer, IN
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Le Mans Master
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From: Zephyrhills, Florida
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13
memphis_vette Did the shop do an install? Have them check/change the wires to the GM if so. Plugs should be fine pre gapped as others have said.
Race Director
Joined: Apr 2007
Posts: 11,152
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From: South Western Ontario
I'd first check to make sure the wires are properly installed and fully plugged in at both ends. One wire "bouncing" around on the end of a plug would cause issues like you're seeing. They should click twice when you plug them into the coils. Make sure something dumb didn't happen like the wire end was pushed into the boot and only the boot is holding the wire on the coil.
Isn't it the GM Performance Parts wires or something like that he should get and not the stock wires? They are red and don't look anything like the grey ones with the steel covers that came on my LS1 stock.
Peter
Isn't it the GM Performance Parts wires or something like that he should get and not the stock wires? They are red and don't look anything like the grey ones with the steel covers that came on my LS1 stock.
Peter
Racer
Joined: Feb 2004
Posts: 348
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From: Las vegas Nevada
Plugs and wires
I replaced my plugs and wires two years ago expecting an improvement, what I got was poor acceration and an egnie idle that was rough.
I removed the plugs and found the gap to be out of specification. I also heard that they are pre-gaped.
I re-gaped them, use plenty of contact grease and re-installed them. I got a smooth engine idle after the re-gap.
Steve
I removed the plugs and found the gap to be out of specification. I also heard that they are pre-gaped.
I re-gaped them, use plenty of contact grease and re-installed them. I got a smooth engine idle after the re-gap.
Steve
