My brother owns a 98 Honda Civic LX Sedan, and today we took out his car’s spark plug (NGK ZFR5FGP G-power Platinum). There is a ton of white stuff on both electrodes. Picture links below (if you see the photos upside down, you can download them to view them correctly)
Does it look like the engine is burning some oil, and that causes the plugs to get so much white stuff (some kind of carbon build up) ?
The sparking side electrode seems to still be intact, but I don’t know if we should replace those plugs. However, if we replace those plugs while the car is still burning oil, the new plugs will still get a ton of white stuff on the electrodes again.
We did notice his car’s engine oil get used very quickly, and we noticed distributor area had oil leak. We replaced O-ring from valve cover to distributor and the O-ring seal inside distributor housing last month, but these sparks plugs seem to tell us the oil is not only leaked.
BTW, he has been having catalyst converter problem where the integrated exhaust manifold had a crack on the exhaust pipe which won’t pass California smog test. He had the cat replaced few days ago.
Can anyone help to give some suggestions on what may be wrong with his car base on these info ?
Please let me know if there’s info we should gather.
Thank you for your help
- This topic was modified 1 year, 3 months ago by Good Maintenance Guy.
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