Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Spark Plugs too rich or head gasket is bad?

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Old Nov 19, 2025 | 06:04 PM
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DLR_civic2001's Avatar
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Default Spark Plugs too rich or head gasket is bad?

Hi guys, I am new here!

I am buying a 2000 civic, it is very original and drives great. I did a compression test and it is 175 PSI in 4 cylinders.
However I noticed the spark plugs are little red/brown. Do you think is too rich and maybe cleaning the MAF and a tune up can resolve it or it is a head gasket problem?
What do you think? It is a D16y8

What do you think? It is a D16y8

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Old Nov 19, 2025 | 06:59 PM
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Default Re: Spark Plugs too rich or head gasket is bad?

That color is from running octane booster (or some type of fuel additive) or leaded fuel. It isn't because it is running rich... and you don't have a MAF sensor... you have a MAP sensor which operates totally different.
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Old Nov 21, 2025 | 02:56 AM
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Default Re: Spark Plugs too rich or head gasket is bad?

[QUOTE=DLR_civic2001;53011858]Hi guys, I am new here!

I am buying a 2000 civic, it is very original and drives great. I did a compression test and it is 175 PSI in 4 cylinders.
However I noticed the spark plugs are little red/brown. Do you think is too rich and maybe cleaning the MAF and a tune up can resolve it or it is a head gasket problem?
What do you think? It is a D16y8

They ran Seafoam or some fuel system cleaner thru the gas tank, As long as they dont have oil or are black they will run fine
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