How to Select Spark Plugs for Your Engine

The spark plug is the difference between a pile of parts sitting quietly in your car and a running engine. If they don’t work properly, your engine doesn't run well, if it even runs at all. Take the time to learn about the ins and outs of spark plugs, how to properly prepare them for your engine combination, and how you can use them to make a little extra horsepower on the cheap!

Learn More:

Timestamps:
• 00:32 – Spark Plug Options
• 01:50 – Temperature and Heat Range
• 04:20 – Spark Plug Gap
• 05:34 – Tapered vs. Washer Seats
• 06:20 – Terminal Nut vs. Threaded Nut
• 06:50 – Indexing Plugs
• 08:00 – Ignition Boxes

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[jimharrow]

Great information & to the point video...
Thanks...

[SaW]

I was just looking for a video like this!

[chargerman]

Love those 340 T/A U heads, very rare!

[grahamerosewarne]

I run TR6 NKG plugs have no problem at all. Holley knock-em out of the park. Awesome content 👍 Aussie Fan 💯🇦🇺

[lawrencer]

Amazing video, going with ruthenium hx plugs for my boosted c7, one step colder

[hawk]

I don't recall that the electrode is actually copper on copper electrodes. The conductor inside the spark plug is copper but the electrode is not. I have filed those and never found copper in any spark plug. They haven't used copper for the electrodes of spark plugs since at least the 1950s probably the 1930s because it would only last about 5 or 6, 000 miles. If that.

[PANTYEATR]

How about the recommended spark plugs that performance head manufacturer give in their instructions? Are they good recommendations or should they be scrutinized? Thanks Holley🏆💪

[dirankoroghlian]

When indexing a plug how do you address the tapered plug? Getting a seal and proper index

[zachsmith]

I have a 2015 Hyundai Genesis N/A 5.0 I am looking for a good performance plug Its pretty much stock I have a sprint booster, exaust and ram air snorkels I'm gonna get a tune soon and would like to change the plugs before then any suggestions?

[biggravy]

Do you have a spark plug recommendation for a 13 Mustang GT NA on e85 w/full bolt ons?

[sousaeteurn]

hello. i have a 2015 silverado 1500 LT 5.3. Complete stock. I just bought the Blaster and Super Conductor for it, and i was wondering which spark plug and spark plug gap i should be running with this combination. Thank you!

[jimgee]

can i use platinum or iridium plugs on a 1970 318 engine with pertronix ignition or do i have to use copper plugs for the 50 year old engine or is it safe to use the plat or irid plugs

[deanjagger]

I have a 2014 Town and Country Van. I changed the spark plugs and coils on my van. Engine still shakes when started. I wonder what it could be. Falty plugs and coils?

[manuelpinto]

I need to know which the spark plug is good to Mitsubishi 1988 Colt 3 cylinder, thanks

[mitchellsanders]

All those plugs have copper cores.
They would be better refered to as nickel, platinum and iridium.
But for some reason people are stuck on calling nickel electrode plugs "copper"

[DoitwithOA]

I got 2013 Toyota Camry 4 cylinder which one should I go with 🤔

[flinch]

Heat ranges are flat out confusing when swapping over brands. Most, the lower the number, the hotter it is - except for Bosch and Accel [to pick two I know of], which adhere to the opposite. Champion? Bring a decoder ring, cause I can't explain their method - some sort of hybrid nuance happening there. Denso seems to have the most coherent scaling, but some would rather not have so many numbers to choose from and live in a 1-10 world.

[curtismcdonald]

2004 Toyota Matrix + recommended spark plug

[idek]

Man I need help, I don't know what's wrong with my bike! I'm running out of money and patience.

Bought it from someone who said there was nothing wrong with it, but it hasn't worked since the day I got it.

Had it for almost 2 years now and sometimes (but rarely) it works pretty much like it should and suddenly just stops working again.

I finally changed the regulator and it worked perfect!! for 15 minutes... Now it'll barley start and just stalls..

The spark plug is completely black and dry. And idk how to fix whatever is turning it black. Bike doesn't have a carburetor, so if it's running rich I don't know how to fix it. And if I need a new spark plug I don't know which one to buy.


Someone please help me!!!

[jeffp]

Easy enough, use the ones recommended by the manufacturer !!