The best spark plug reading video I’ve seen, thanks for explaining and cutting the threads off. Now I know what to look for.

Great info as always. Could you touch on how/if different heat range plugs would have an effect on reading?

I've been watching car videos for years, and they'd talk about reading plugs, but never broke it down. I learned more in 5 minutes with this video than 5 plus years of watching car youtubers. Bravo!

never have I seen a better video or heard a better explanation on spark plug reading. Really Cool Steve!

The Sparkplug. You're on. There was a time auto parts stores handed these out, Champion,

Steve, I think you should do a video on "when to check your plugs". For example, I would make a pass and right at the 1/4 beams, pop the trans in neutral and shut the engine off. Tow back to the pits, let the engine cool and then pull plugs to take a reading.

The Steve Tech videos are accurate and very informative. Thank you Steve Morris for providing everyone in the automotive world with your wisdom, free of charge.

no truer words were ever spoken. I was taught this back in the 60s by a tune up guru. your exact explanation . All "tune them alls " tune via a lap top and dont wanna get there hands dirty. another good tool is a gas analizer, Co and HC under load tell a lot but most guys cant afford one and they cost a mint these days . I still have my old sun 111

Thanks for this video, finally a clear visual explanation of what lean really means! Subscribed

I used to work as a tech for a tuner that would burn the straps of plugs like they owed him money. Over the years I have learned that really good tuners are hard to find.

The algorithm at its best I was just setting timing on fresh rebuild marine BBC. Going to pull a plug and see how I did. Thanks Steve

Figured you would talk about different deposits build up etc. But this was useful also

Very well explained Can't explain it any better than this video

Man expand on this please. Heat range, thread coloring. Cruise tuning would be cool also.

Thank you so much. This is a EXCELLENT tech video.

Excellent and clear cut video. Thanks Steve! 👍

Your vids are awesome. You're my new engine Dad. Thanks for the knowledge man this is solid gold. Watched almost all of the tech vids twice now and I plan on watchin' 'em again and again

Learned something new. I always learned to inspect the tip, electrode, and threads when tuning. I need to do more. Thank you.

Thanks steve, this information is gold.

More please. There’s got to me more to this. Thanks Steve. Best plug video I’ve seen.