I have a 2010 Vibe....2.4L....77k miles.
Has anyone had any issues with excessive corrosion on the end of the spark plugs and/or contact springs inside the coil boot? I'm trying to find out if this is a common issue or if it's just my car or ???
Fo reference.....I replaced my old coils with AC DELCO units last summer....at the same time I replaced the spark plugs with the OEM ones.....I also used dielectric grease on the end of the plugs & on the ceramic part of the bodies.....I also used the dielectric grease on the inside of the coil boot, some on the outside of the coil body, and on the end of the coil body that seals against the head.
I know this sounds like overkill with the grease, but this is the 3rd time I've experienced what I believe is excessive corrosion and I'm trying to prevent any moisture from getting to the end of the plug/coil spring.
Also, I believe that this corrosion is causing, or at least adding to, a problem with low idle when stopping at a stop sign. It happens infrequently, but when it does, the RPMs drop to 500 and it feels like the engine might die. It never does die, but it's disconcerting nevertheless. Other than this occasional issue, the car runs fine.
Anyway....again....has anyone noticed this excessive corrosion on the end of the plugs & inside the coil boot.