What are these markings ? (2017 ram)
Yes, I have all 8 of them still
Maybe in the summer when I have time to play with the truck I can switch out a few of the old coils at a time, to see if one of them actually is bad, or if it was only the plugs
I'm still not sure about the markings on them, it looks suspicious to me
You will have to remember that you now have the 40,000 volt coils instead of the stock 30,000 volt coils.
Thinking if your mechanics did as Performance Distributor has recommended they opened up the new spark plugs to .065 ths to go with the higher voltage coils.
Now if you put one of the original coils back on top of that, the 30,000 volt coils are going to have a hard time jumping the wider .065 ths plug gap. Thinking the stock spark plug gap setting was .050 ths???
Thought there was a way to test the original coils outside of the vehicle to see if they are good or not.
It could have been a combination of 3 things that caused your misfire to begin with, as electricity follows the path of least resistance.
1. Spark Plugs had 90,000 miles on them and were ready for replacement.
2. Coil boots were starting to loose their flexibility and seal allowing moisture to get in helping the coil electrodes the ability to short to the ground of the head.
New replacement boots only are available for sale for this purpose to just replace the boots.
3. Coils are beginning to fail after 100,000 miles, exposure to any moisture helps this along. Also the water proof electrical connectors can become the source of a bad electrical connection, as Dielectric Grease is recommended at time of assembly. Pretty sure you won't see any Dielectric grease on the connector terminals of the original coils that they took out, they are probably dry.
That is why as you and your mechanics have done, was to replace the spark plugs, and the new coils with the new dual boots installed. Covering all the bases of the problem in one operation.
Those are high voltage systems where the coil charges can short to ground if not sealed correctly or there is contamination in the path.
Fussy stuff with these new vehicles.
Thanks
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