white electrodes
01-05-2007, 02:56 PM
#1
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white electrodes
Hey Ive got a 97 civic si. Stock D16y8 other then intake header highflow cat. When cold the car bogs on acceleration but once above say 3500 rpm it takes off. I recently change the spark plugs with the reccomended NGK ZFR5FGP plugs. I checked them today and the electrode is very clean but a chalky white. What would cause it to run lean like this and would it have anything to do with the bogging?
01-05-2007, 06:08 PM
#2
White/Greyish/Yellowish is normal
Chalky white, if you sure thats what it is means lean like you said.
Some people can get confused on how to actually read a spark plug. Some results are obvious while others can make you wonder. Check out Ngk's website and go to "technical information" then "how to read a spark plug". This way you can be sure.
Chalky white, if you sure thats what it is means lean like you said.
Some people can get confused on how to actually read a spark plug. Some results are obvious while others can make you wonder. Check out Ngk's website and go to "technical information" then "how to read a spark plug". This way you can be sure.
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