Rusty spark plugs (with pics)

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08-02-2015, 11:09 PM

BMX Dad

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Join Date: Mar 2008

Posts: 119

Rusty spark plugs (with pics)

Plugs from 7 and 8 were rust colored. What would cause that?.

https://www.camaroz28.com/forums/mem...ugs-2-6567.png

https://www.camaroz28.com/forums/mem...ugs-1-6566.png

The other 6 looked good - beige white color on the electrode.

2 yrs and 21K miles on the NGK 4177 plugs

Car runs great with the new plugs

08-02-2015, 11:16 PM

DelSoto

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Join Date: Sep 2000

Location: Stillwater Ok USA

Posts: 574

Re: Rusty spark plugs (with pics)

Was the car sitting for a while? Ozone maybe? The two cylinders that had suspect plugs had valves open?

08-05-2015, 11:13 AM

maybe2fast

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Join Date: Nov 2006

Location: Commerce, MI

Posts: 889

Re: Rusty spark plugs (with pics)

I remember reading years ago that fuel additives will cause redish on plugs. I like the open valve idea

08-06-2015, 04:01 PM

BMX Dad

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Re: Rusty spark plugs (with pics)

Thank you for responding

08-15-2015, 01:15 PM

Justin_502

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Join Date: Aug 2015

Posts: 7

Re: Rusty spark plugs (with pics)

My plugs looked the same, after plug change I checked a few plugs after several nitrous runs. And they looked like that again. At least it wasn't lean! Still runs fine