Ever seen a spark plug look like this?
Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
Ever seen a spark plug look like this?
every one of them look like that....besides the fouling, look at that gap!
its more than double the largest 45 gap that my gap measurer goes to...must be well over a 90 gap....
and the spark plugs wires are disentigrating in my hands
this seems crazy to me, and frankly I am a little embarrased that I have had the car for three months now and not checked this sooner...have changed the oil twice, done lots of mods, changed bushing, flushed and changed all fluids etc...but for some reason just never got around to checking the plugs....I really am embarrased
has any one ever seen a gap set that big on a plug in a C5 before?
wonder why they would have done that.
I tracked down the previous owner and he was an older guy that owned it from new and took emaculate care of it....but this spark plug thing is crazy to me....whats even more crazy is that the car seems to have been running tip top with those plugs like that...
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
I just changed the plugs in by daughter's Jeep this past week. Plugs looked the same, but had 117K miles on them. Funny thing is the car ran fine, I changed them more from guilt than anything else. The wires aren't a surprise. They are awful to remove and many guys break them in the process. I went with new GM LS7 wires, with the 90 degree spark plug end on them.
Tech Contributor
Joined: Jan 2007
Posts: 19,470
Likes: 1,170
From: Dyer, IN
every one of them look like that....besides the fouling, look at that gap!
its more than double the largest 45 gap that my gap measurer goes to...must be well over a 90 gap....
and the spark plugs wires are disentigrating in my hands
this seems crazy to me, and frankly I am a little embarrased that I have had the car for three months now and not checked this sooner...have changed the oil twice, done lots of mods, changed bushing, flushed and changed all fluids etc...but for some reason just never got around to checking the plugs....I really am embarrased
has any one ever seen a gap set that big on a plug in a C5 before?
wonder why they would have done that.
I tracked down the previous owner and he was an older guy that owned it from new and took emaculate care of it....but this spark plug thing is crazy to me....whats even more crazy is that the car seems to have been running tip top with those plugs like that...
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The secondary ignition in the LS series engines are built very well and will continue to work under the worst of conditions.
That goes to show you that you DO NOT need any aftermarket mods in that area. If you have not already done so, get a new set of AC DELCO Irridum plugs and a set of GM Performance Red wires and you will be set for a LONG TIME!
That goes to show you that you DO NOT need any aftermarket mods in that area. If you have not already done so, get a new set of AC DELCO Irridum plugs and a set of GM Performance Red wires and you will be set for a LONG TIME!
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Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
The secondary ignition in the LS series engines are built very well and will continue to work under the worst of conditions.
That goes to show you that you DO NOT need any aftermarket mods in that area. If you have not already done so, get a new set of AC DELCO Irridum plugs and a set of GM Performance Red wires and you will be set for a LONG TIME!
That goes to show you that you DO NOT need any aftermarket mods in that area. If you have not already done so, get a new set of AC DELCO Irridum plugs and a set of GM Performance Red wires and you will be set for a LONG TIME!
yeah, I'm amazed that the coils could push an apparently good spark through those plugs.
I spent several days researching plugs because I installed a Nitrous kit and wanted to put in a good colder plug...ended up going with a none projected tip NGK plug that works best for Nitrous applications.
I got two sets to try out. One set with seven plugs that are one heat range colder with a single plug that is two heat ranges colder for the hotter running 7th cylinder....and the second set is two heat ranges colder with a single plug that is three heat ranges colder in the 7th cylinder.
will gap all plugs at 35.
she's my daily driver and the wires shredded, so I have to pick up whatever plug wires auto-zone has in stock, but will order some race rated plug wires that can handle sustained high heat and put some socks over those too.
Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
I just changed the plugs in by daughter's Jeep this past week. Plugs looked the same, but had 117K miles on them. Funny thing is the car ran fine, I changed them more from guilt than anything else. The wires aren't a surprise. They are awful to remove and many guys break them in the process. I went with new GM LS7 wires, with the 90 degree spark plug end on them.
