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What would cause my plugs to look like this - 6G Celicas Forums

Topic #92409 13 posts Started by RavenAegis45
RavenAegis45
#1
So my car has been starting a little rougher than usual and since I had a smog test at a star station coming up (I live in CA) I decided to do a tune up, well to my surprise when I pulled the plugs they all looked like they had rust on the tips aren't plugs suppose to normally have a whitish coloration after being used for awhile, these plugs are about a year old I would say, anyone know what can cause them to look like this


mi645
#2
running lean? r u getting good mpg?
any mis or back fires
Box
#3
Some fuel additives can cause the plugs to turn brown, but it'll be almost crusty in appearance. Normal use makes them tan. Running lean they'd still be white, running rich they'd be black from carbon deposits.
2001 Miata LS 5-speed
ILoveMySilly97
#4
Must be additives.
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RavenAegis45
#6
>
QUOTE (ILoveMySilly97 @ Apr 5, 2014 - 8:17 AM) *
>Must be additives.

Haha now that you mention it I recently got a few fuel additives for free so I've been using them every fill up thats pretty wierd

>
QUOTE (mi645 @ Apr 5, 2014 - 2:41 AM) *
>running lean? r u getting good mpg?
any mis or back fires

No I usually run with my auto-scanner hooked up and it lets me know if I have any misfires, plus my mpg seems pretty normal around 27 combined
Bitter
#7
You read my link? It's from MMT commonly found in "octane boosters".
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
Smaay
#8
lean plugs would look white, rich would look black. those dont look bad to me for using additives
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
RavenAegis45
#9
>
QUOTE (Bitter @ Apr 5, 2014 - 10:49 PM) *
>You read my link? It's from MMT commonly found in "octane boosters".

Yeah I seen and I did get a free Lucas Octane booster didn't think much of it and i didn't really notice a difference in my car
Box
#10
The car is also designed to run on regular fuel, so anything over is a waste of money.
2001 Miata LS 5-speed
Bitter
#11
You got a bottle of 'does jack **** for your car'. Well it turns the plugs brown....
2000 Celica GTS 'slowest gts evar'1998 Mazda 626 FS-DE/CD4-E
RavenAegis45
#12
>
QUOTE (Bitter @ Apr 6, 2014 - 9:34 PM) *
>You got a bottle of 'does jack **** for your car'. Well it turns the plugs brown....

Well nothing cheaper than something free
Box
#13
Actually, getting paid to take something would be. tongue.gif
2001 Miata LS 5-speed
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