Johnny O
Just hangin' out.
Thank you for all the patient answers to what are likely very basic questions! (Remember my automotive skill set is mostly on air cooled VWs…)
Anyway, Here’s another:
changed my plugs today to proper NGK ZFR6F-11Gs @.040
Glad I did, as I found a few other items that needed attention when I moved the coolant reservoir.
MIL came on. Figured was due to the months old gas that came with the car. Suspected plugs hadn’t been changed.
Code reader showed multiple misfires on #4 and #6.
Plugs that were in it were Champions and while I have seen trodes in far worse shape, these were not the worst. I highly doubt these were properly gapped, as they ranged around a third larger!
But take a look at the terminals on #4 and #6. That’s carbon from arcing correct? Both those ignition coils were bone dry of dielectric grease. I cleaned them with some ETOH and swabs and added fresh dielectric grease.
As I’m unfamiliar with this sort of set-up, is the arcing a sign of sketchy ignition coils, lack of dielectric grease, or bad plugs? Or all of the above?
Put 20 miles on the new plugs and watched the code reader In real-time. No DTCs. Engine ran noticeably smoother.
Anyway, Here’s another:
changed my plugs today to proper NGK ZFR6F-11Gs @.040
Glad I did, as I found a few other items that needed attention when I moved the coolant reservoir.
MIL came on. Figured was due to the months old gas that came with the car. Suspected plugs hadn’t been changed.
Code reader showed multiple misfires on #4 and #6.
Plugs that were in it were Champions and while I have seen trodes in far worse shape, these were not the worst. I highly doubt these were properly gapped, as they ranged around a third larger!
But take a look at the terminals on #4 and #6. That’s carbon from arcing correct? Both those ignition coils were bone dry of dielectric grease. I cleaned them with some ETOH and swabs and added fresh dielectric grease.
As I’m unfamiliar with this sort of set-up, is the arcing a sign of sketchy ignition coils, lack of dielectric grease, or bad plugs? Or all of the above?
Put 20 miles on the new plugs and watched the code reader In real-time. No DTCs. Engine ran noticeably smoother.
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