experts!! diagnose my spark plugs.
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experts!! diagnose my spark plugs.
ok, im trying to determine the state of my engine from my plugs. they have been in for about 6k miles and i decided to pop them out and take a look. as far as i can tell the enine is healthy and running strong, however i just wanted to make sure and ask about a few observations i had.
-the plugs are a dark cocoa color. the leadings are a shade darker than the trailings. are the trailing suposed to be lighter?
-the tan buildup, is easily scratched off with a screwdriver to uncover the bare metal electrode. (im prety sure this is good)
-this is the strange one. botht leading and trailing, but leading moreso, have what looks like a stripe of oily gunk acrost 2 of the oposite pie-wedge electrodes. it didnt feel oily, but it was much darker and softer than the rest of the buildup. what is this stripe about and shouild i be concerned?
-the center electrodes were all worn down to hemishperes but still at the same height as when they were new. this means i need new plugs right?
-if i do need new plugs, isnt 6k a little early and should i stick with the stock ngks?
some extra info: im running strait premix and i did the water trick with 3 gallons of distilled about 1000 miles ago.
-the plugs are a dark cocoa color. the leadings are a shade darker than the trailings. are the trailing suposed to be lighter?
-the tan buildup, is easily scratched off with a screwdriver to uncover the bare metal electrode. (im prety sure this is good)
-this is the strange one. botht leading and trailing, but leading moreso, have what looks like a stripe of oily gunk acrost 2 of the oposite pie-wedge electrodes. it didnt feel oily, but it was much darker and softer than the rest of the buildup. what is this stripe about and shouild i be concerned?
-the center electrodes were all worn down to hemishperes but still at the same height as when they were new. this means i need new plugs right?
-if i do need new plugs, isnt 6k a little early and should i stick with the stock ngks?
some extra info: im running strait premix and i did the water trick with 3 gallons of distilled about 1000 miles ago.
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