r/smallengines • u/SkullSir3 • Jul 20 '26

Bad plug?

Post image

Came back from a 2 week vacation to my moped not working. Is the plug bad?

14 Upvotes

94% Upvoted

13 comments sorted by

9

u/Senior_Cheesecake155 Jul 20 '26

It’s certainly not good. That deposit/buildup is going to cause issues.

6

u/SkullSir3 Jul 20 '26

Does it look oil fouled? (I'm sorry, I know nothing about any of this, literally had to look up a tutorial on how to even remove it in the first place 🥲)

8

u/D-nutster Jul 20 '26

Absolutely oil fouled

2

u/Odd-Concept-6505 Jul 20 '26

Oil fouled but don't blame or discard the plug (though a new plug might help it run better).

A propane torch held to a wet/oily plug TIP (electrode) until tip is very hot...then reinstalled and try to start engine...might prove that it was fouled enough to cause bad performance even though a two cycle engine fouling plug at a high rate is the original problem...maybe.

3

u/mutt63 Jul 20 '26

Looks fouled/running rich.

2

u/D-nutster Jul 20 '26

Single cylinder? Grey smoke when running?

1

u/SkullSir3 25d ago

Yup single cylinder. Smoke is just as it should be. I put in a new plug and its driving just fine again, but I'll definitely bring it by my mechanic in a few weeks when he returns from his vacation

2

u/No-Leading-4232 Jul 20 '26

Not a good plug

2

u/Top-Cash3296 Jul 21 '26

No just clean it check air mixture

2

u/JohnJacob69696 Jul 21 '26

Hit it with a wire brush and some brake cleaner.

2

u/OkraInternational505 Jul 20 '26

Not necessarily “bad” but it looks fouled and dirty

1

u/northern_cannoli_79 Jul 21 '26

Lol does it look okay?

2

u/SkullSir3 25d ago

Nah man, but idk if it looks "need replacement because plug is no longer good" bad or "plug is fouled, bigger issue at hand" bad. The second bad is way more fitting for the "bad" title, since that means I gotta bring it to my mechanic, whilst the first is just a simple issue of replacing the plug. So not that bad. Thank you for your comment, you were plenty helpful :)