Just pulled my spark plugs, see anything interesting?
12-21-05, 03:58 PM
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Just pulled my spark plugs, see anything interesting?
Well I just changed out my spark plugs, here are my old ones, does the color of the plugs say anything?
sorry about the size
sorry about the size
12-21-05, 04:09 PM
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normal....
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12-21-05, 06:53 PM
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Originally Posted by RotaryResurrection
Good for an NA, probably a little lean for a modded t2 
12-21-05, 07:28 PM
#11
Rich will show up as a light chalky black carbon deposit most of the time. Tan is stoich/lean most of the time. It's normal for a moderately rich running engine to have tan center surrounded by black carbon, but I see hardly any carbon at all there. So it isnt running rich, by the plugs anyway.
12-21-05, 08:58 PM
#12
AutoX Donut Maker
Heh, mine looked like that and I thought something wrong.. so I tossed new ones in... glad to hear my NA is still doing good and I don't have any odd **** gettin burnt up in there...
12-22-05, 06:09 AM
#14
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They are just about perfect.
If anything, the gasoline you're using has a lot of "additives" in it - i.e. lots of brown / tan deposits...but if we're talking about 10k+ miles, then that explains it.
-Ted
If anything, the gasoline you're using has a lot of "additives" in it - i.e. lots of brown / tan deposits...but if we're talking about 10k+ miles, then that explains it.
-Ted
12-22-05, 11:06 AM
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In general, spark plugs show how the tune was just before it was shut off.
It can be running way rich at WOT, but as you cruise up the street & pull in the driveway, the idle tune will color the plugs.
To check WOT tune, do a WOT pull & then shut down, coast to the side, pull the plugs right there.
It can be running way rich at WOT, but as you cruise up the street & pull in the driveway, the idle tune will color the plugs.
To check WOT tune, do a WOT pull & then shut down, coast to the side, pull the plugs right there.
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