Here's How To SPOT BAD SPARK PLUGS!!

Here's How To Find Bad Spark Plugs!! Spark Plug Test!! How To Test Spark Plugs!! #sparkPlugs #iridiumSparkPlugs #roughIdle ** I am an Amazon associate. I make a commission based on sales through my Amazon associate links.** ACDelco 41-103 Spark Plugs: https://amzn.to/3P7NnCR Battery Tender: https://amzn.to/3KQUwoy Spark Plug Tester: https://amzn.to/3LfOqhV https://www.1roadgarage.com In this video I'm still trying to diagnose and fix a rough-idle issue I'm having with my 2005 GMC Envoy 4.2L Vortec. I've replaced a bunch of parts and the problem persists. Today, I've decided to rule out a couple of things. The first is the compression. In previous videos there've been a lot of comments about doing a compression test. In this video, I finally perform that compression test. Secondly, I wanted to rule out the spark plugs. They are an easy enough fix and relatively affordable. Unfortunately, I didn't realize, until I started doing a little research, that there are possibilities of non-genuine ACDelco Iridium plugs out there. So, that led me down a bit of a rabbit hole but I'm pretty sure I've gotten it figured out. Enjoy. **This channel is for entertainment purposes only! Do not do what I do. Do not take my advice. I am not a professional. The methods I use may be completely wrong and/or dangerous. Please seek professional help with anything and everything and do your own due diligence (research). Working on cars is extremely dangerous. I am not responsible for any loss of life or limb or property. DO YOUR OWN RESEARCH. THIS CHANNEL IS FOR ENTERTAINMENT PURPOSES ONLY!** FTC Disclaimer: I am an Amazon associate. As such, I earn a percentage of sales made through Amazon associate links found in the description of my videos and on my website and other places. 00:00 Intro 01:53 New Spark Plugs 03:04 Old Spark Plugs 03:42 Testing Spark Plugs 07:02 Compression Test 08:27 Fake Spark Plugs 10:08 Installing Spark Plugs 10:31 Starting The Envoy 11:20 Conclusion