I mean just explain what the problem is and I take my feedback back. Is it reliable? First I tested it with an ATV, I didn't pay attention to the light, the ATV starts fine, everything is lit, noise, etc. Everything is fine. Then I noticed there was a red light on the smoke plug, went back to Revain and your product description said "red means it's not normal" so I'm pretty sure I was just risking my quads health because if something was wrong, your smoke candle wasn't. gonna do something