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Hi, I'm still learning, my vespa is s125 3v 2014. Recently I trying to replace spark plug on my bike, and somehow the spark plug got loose and drop itself inside the engine. Is there any how to recover the spark plug? It's not exactly inside the engine but front of the engine. Picture below maybe managed to explain little bit more.

[img]https://members.modernvespa.net/keblinger/uploads/20220603_164543_90354.jpg[img]

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@znomit avatar
UTC

Veni, Vidi, Posti
LX190 Friday afternoon special, [s]Primavera[/s], S50, too many pushbikes
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@znomit avatar
LX190 Friday afternoon special, [s]Primavera[/s], S50, too many pushbikes
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Are you sure it's not fallen down somewhere else?
@mopmop avatar
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Hooked
2017 GTS300 'Beauty'
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I've had the same happen on my LX50 a couple of years ago. I had to remove the black plastic cover that's in front of the stator to get to it.

If I'm not mistaken, your engine is basically the same, so you could try there.
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znomit wrote:
Are you sure it's not fallen down somewhere else?
I'm pretty sure it's inside, there's a little compartment between there and it's there. I kinda pushed the sparkplug in.
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Mopmop wrote:
I've had the same happen on my LX50 a couple of years ago. I had to remove the black plastic cover that's in front of the stator to get to it.

If I'm not mistaken, your engine is basically the same, so you could try there.
Unfortunately no it's not plastic cover. Maybe removing the cover panel but I'm kinda afraid cause I think it's part of the engine because its made of metal.
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2017 GTS300 'Beauty'
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Hmmm. Maybe you can get to it if you remove the valve cover?

It's not hard to do, just make sure you clean the outside of the valve cover first, so that no trash gets inside.

(though I'm not really sure where your spark plug could be, but maybe this will help you further)
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Hooked
2017 GTS300 'Beauty'
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Oh, and when reinstalling the valve cover make sure you tighten the screws, but don't go to town with it. You don't want to strip the threads.
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2020 primavera 150
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Can you get a flex magnet in there?
@oscarsass avatar
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Hooked
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Will the spark plug cap not slide onto it, and grip it enough to get it out?

If the plug is unthreaded, it would stick out more the usual allowing you to get the cap snugly on?

EDIT - just studied the photos in more detail. Blimey! So it's really off to the left there.

So, yes a magnet might help but how do you get it upright and to come out of the hole again? Hmm… fine pliers?

Proper job. 🙈
⚠️ Last edited by OscarSass on UTC; edited 2 times
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My tool for retrieving dropped parts, and a tool to prevent losing the spark plug in the first place.
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Red Devil SH150i (10,000)
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73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special
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@mjrally avatar
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special
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Remove the valve cover. 8mm bolts. Find spark plug. Wipe the O ring and reinstall.
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I always use rubber hose to install and remove.
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Mopmop wrote:
Hmmm. Maybe you can get to it if you remove the valve cover?

NO NO NO. Someone who lost the spark plug somewhere in the engine compartment should not start taking the top of the engine apart.

Harry B has the right idea. Get a magnet and poke around with it until you find the spark plug. I've dropped quite a few spark plugs in various parts of the engine and engine compartment, and this is the best way to find it and get it out.
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