Compare Good vs Bad Spark Plugs

#shorts #motorcarnut

[Rescue]

A napkin on the tailpipe while running will show if it's burning oil. Those plugs are dry, that's not gas. You'd have a miss if the ignition system was at fault. That's definitely oil. Rings most likely, but a blown head gasket could allow oil into the cylinder. Check for oil in the coolant or water/foam in the oil to confirm.

[ChangedUpNowWhat]

Hello! Thanks for letting us know good VS bad ones because some of us are complete newbies lol! Thanks Man!

[kenmorrisproducer]

This is incredibly helpful! My neighbor gave me their pressure washer (with a Honda GX200) and it couldn’t idle. When I pulled the spark plug, it was jet black and greasy!

[Drago]

The second set is what mine looked like on 2 of the four with a ton of ash build up, the other two were very rich. It had a massive intake leak, vaccum lines missing, clogged air filter, fuel filter, and to boot, original plugs from 24 years ago. Also clogged injectors that have gotten better after cleaners.

[sugarsaint]

I do my own plugs on my ST and they always looks like DISS thank God

[dopeylindstrom]

Ish tan is lead based gas colors. As long as they aint powder white, metal specked, or black you are good.

[nzbaaa]

Can running too rich lead to spark plug failure ?

[kovalenkoihor]

What if on one spark plag white ceramic part of it looks like light oil dried around it?

[markfsal]

Forgot to turn off the manual choke 😂😂🛠⚒

[jackstakes]

you're comparing 2 different types of spark plugs.
the first set you showed are called cold spark plugs (with less insulation, hence fewer threads), which tend to dissipate heat more from the insulator to the block and in turn cannot fully burn the carbon deposits on the insulators.
the second set you showed are hot spark plugs (with more insulation, hence more threads), and they do not dissipate a lot of heat from the insulator to the block and therefore they completely burn the carbon deposits on the insulators, hence the light greyish colour.

you're welcome.

[Gravvvyyy]

I just go happen to be having some engine issues as well....thanks guys and thanks YouTube algorithm. Feels weird saying that.

[mrdanger]

First ones look like a direct injection plug

[sharlacano]

My spark plugs look like that on cylinder 4

[orlandomedina]

What about half black and half light brown?

[Norcal]

Mine are black but car run smooth and good they tend to turn black from short trips

[shadoweagle]

Unless it's carbureted in which case she's running rich.

[tshepi]

Please do a video on what cause compression failure and also how to spot a car that has one at the dealership

[engelhardtblaauw]

Mine on 1, 3 and 4 look black and 2 still looks clean, engine newly repaired.

[roadsidecamper]

I ran my plugs too lean with timing advanced and they were ashy white. Goodbye 50 dollar NGKs 😢

[VuLe-tm]

so spark plug is like pencil, once they get shorter, replace with new, longer one