In removing all my ignition coils and spark plugs for a refresh, and checking the condition of the spark plugs and coils and the slots. I notice one of my slots on the passenger side, the coil's seal wasn't as good and there was some rust around the circular entrance of the hole, and there is some rust on the cylinder walls of the hole. On this bad hole the ignition coil was also noticeably more "brown" instead of the gray color, compared to the other 7 coils. I'm thinking this bad coil had a bad gasket and some water or moisture got in and got trapped in there...
The other holes the ignition coils came out clean and the metal cylinders are shinier.
Example of the bad one:
Example of the good ones:
The car is over 170K miles and I don't think the previous owner ever changed the coils or plugs....
Should I be worried about this or just leave it alone and insert new plugs/coils? I was thinking of (while spark plug inside) using some wd40 and going in there with a small wire brush like this and then with a socket and cloth go in to wipe it clean, and then air blowing the remaining debris out. Then can use a brass wire brush to scrape the top surface.
I'll be replacing all the ignition coils and spark plugs with fresh Denso ones.
The other holes the ignition coils came out clean and the metal cylinders are shinier.
Example of the bad one:
Example of the good ones:
The car is over 170K miles and I don't think the previous owner ever changed the coils or plugs....
Should I be worried about this or just leave it alone and insert new plugs/coils? I was thinking of (while spark plug inside) using some wd40 and going in there with a small wire brush like this and then with a socket and cloth go in to wipe it clean, and then air blowing the remaining debris out. Then can use a brass wire brush to scrape the top surface.
I'll be replacing all the ignition coils and spark plugs with fresh Denso ones.
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