This is a follow up from a post I made last year about my poor experience with E3 spark plugs:

After a year of seeing people’s experiences in the comments, I decided to contact E3 and speak to them about the issues we have had.

I first described my problems with my New Yorker, and I got a reply from Chris LaCouture:


I apologize for the problems you seem to have experienced with your E3 replacement spark plugs. May I ask, do you still have the E3.46's that you installed in your 1993 Chrysler New Yorker?

C. LaCouture
E3 Spark Plugs

I replied back and said that I returned them to the auto parts store, because I had to get regular plugs in order to get my car to run. This was his reply:


That is rather unfortunate. I do appreciate you sharing your experience with me. It is somewhat valuable as I keep track of all problems based on part number and vehicle. However, without having the plugs for analysis there is no way for me to determine what could have been the problem let alone fix it. 

I advise that you mention to the people commenting about bad experiences that they need to contact me about any problems. We take customer satisfaction very seriously and I work very hard to assist our customers with any problems they may have.

Again, thank you for sharing with me.

Chris LaCouture
E3 Spark Plugs

E3 is interested in getting all their problem plugs back, so they can analyze them and see what the issue is. This means you can send them back, and they should refund you because of their warranty. So if you have issues with your plugs, please contact Chris LaCouture at

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