Silver ring on the spark plug?
Thread Starter
Back from teh deadly!
Joined: Feb 2001
Posts: 1,163
Likes: 0
From: Louisville KY 40299
Silver ring on the spark plug?
Hmm...Just looking at some plugs and I noticed a silver ring around the inside. Ive never noticed that before...And I didnt see it on any others ( At least, I dont remember seeing it ).
Would leaded fuel leave a deposit like that?
Heres a pic.
Would leaded fuel leave a deposit like that?
Heres a pic.
Thread Starter
Back from teh deadly!
Joined: Feb 2001
Posts: 1,163
Likes: 0
From: Louisville KY 40299
Originally posted by rx_7_driver
not mine, mine r always caked up with some brown **** when i change them
-Shawn (that reminds me i need to change them)
not mine, mine r always caked up with some brown **** when i change them
-Shawn (that reminds me i need to change them)
As far as I can remember, theyve always looked like that MINUS the silver ring.
Can leaded gas leave a deposit like that on the plug? I know it leaves a deposit on the exhaust tips...
I'm bastardizing my car!
Joined: Sep 2002
Posts: 1,258
Likes: 0
From: Naperville, IL.
its not leaded gas. They pretty much dont sell that anywhere, unless u filled up at a race track or somthing. and it would destroy your O2 sensor and cats....
thats just an ash deposit. just use a wire brush and clean it off.
thats just an ash deposit. just use a wire brush and clean it off.
Trending Topics
Senior Member
Joined: Mar 2001
Posts: 429
Likes: 0
From: Vancouver
That's one clean plug - how many miles?? Mine also have the 'ring' along with brownish deposits (from gas additives) although if I look at mine I wouldn't say its from deposits but rather a wear surface, likely from where the spark makes contact.
Henrik
87TII
Henrik
87TII
Shelby Tuner & FC badass
Joined: Apr 2002
Posts: 1,101
Likes: 0
From: Seminole, Florida
Hello and welcome to a normal looking used spark plug..
Just a little wore out..
The center to the outer edge of the area you saw is where the gap is measured. so if it is not a flat squared edge on the center electrode its wore out.
Just a little wore out..
The center to the outer edge of the area you saw is where the gap is measured. so if it is not a flat squared edge on the center electrode its wore out.
I remember someone saying they removed that particular ring on all 4 plugs after seeing, while the Motor was apart, that the SP's actually go deeper without knicking the Apex Seal.
He hypothesized a more Intense spark Is created by them being closer Into the Combustion Chamber.
Mazda designed It like that so I leave It as Is.
*edit* sorry, thought you were talking about ring (washer). Didn't even look at pic.
He hypothesized a more Intense spark Is created by them being closer Into the Combustion Chamber.
Mazda designed It like that so I leave It as Is.
*edit* sorry, thought you were talking about ring (washer). Didn't even look at pic.
Who owns the Chiefs?
Joined: Apr 2001
Posts: 1,630
Likes: 0
From: Dept 5, Ontario. Canada
Never seen that before, but because it's a uniform circle, I'd think it has something to do with the spark and a reaction, not anything catastrophic.
That electrode looks good. When I changed my plugs, the lead electrodes were worn down to little nubs. The trailing plugs looked okie dokie though. I just had brown scale on the conductor material. Yours is really clean, you may be burning lean or something, or there's coolant is giving yer housings the ol' steam clean. Hope it's nothing big.
That electrode looks good. When I changed my plugs, the lead electrodes were worn down to little nubs. The trailing plugs looked okie dokie though. I just had brown scale on the conductor material. Yours is really clean, you may be burning lean or something, or there's coolant is giving yer housings the ol' steam clean. Hope it's nothing big.
Thread
Thread Starter
Forum
Replies
Last Post
ray green
1st Gen General Discussion
2
Sep 2, 2015 06:35 AM
