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2016 Vespa Sprint 150
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2016 Vespa Sprint 150
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Hello everyone! Brand new to the Vespa world - I have a 2016 Vespa Sprint with just over 700 miles. Has a small oil drip coming from below after riding - only drips about a small amount about the size of a quarter. Any idea on why? What could possibly be loose? See photo for location of drip.

Thanks for the help!
Forum member supplied image with no explanatory text
@madison_sully avatar
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Veni, Vidi, Posti
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@madison_sully avatar
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My first thought/hope would be the oil filter not tight enough. Give it a twist and see if you can get it to turn.

Then check the drain plug to see if it is wet with oil.

Anything beyond that becomes bad news.
@tom_jones avatar
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Also make sure your cylinder head bolts are bolted down to the correct torque. Mine was leaking oil and that was the problem. A loose bolt.

Tom
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2016 Vespa Sprint 150
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2016 Vespa Sprint 150
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Seems the plug and filter are on tight. What is the best way to access and tighten the cylinder head bolts?

Sorry - total newbie on motorcycle engines - any good post reccomendations to help me get familiar with the anatomy?
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@jkj-fz6 avatar
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Do you know if it has had its "first service" done yet? If not, or if you don't know, 700 miles might be a good time to have that done. The oil filter and drain plug would be checked at that time, and you could ask the service tech to look for other leaks.
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2016 Vespa Sprint 150
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2016 Vespa Sprint 150
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Location: San Diego
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Yes the first service was completed so service isn't due until 3250. Could it be a function of the engine not being broken in yet?
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@jkj-fz6 avatar
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epditt wrote:
Yes the first service was completed so service isn't due until 3250. Could it be a function of the engine not being broken in yet?
I was thinking it might even be caused by that first service, if it was done recently. The filter or plug not tight, or perhaps just some stray spilled oil running down from the filler hole.

I can't see oil in the photo. But anyway, carefully clean around the filter and drain plug so you can see any new drops coming from them. Has it dripped for long, or just a few days?
@cosmos avatar
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2009 LX 150, 2024 GTS Super
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@cosmos avatar
2009 LX 150, 2024 GTS Super
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I had a small oil leak on my new LX150. It came from the oil pressure switch. The dealer snugged it up and the leak was gone.

Bill
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epditt wrote:
Sorry - total newbie on motorcycle engines -
Seems the answer is go to the dealership and complain and say it didn't leak before the first service. If it is a common fault they will know exactly what to do.
@tom_jones avatar
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Hooked
Vespa GTS 150 3v SUPER. Vespa V100 x 1. Lambretta Li150 x 1. Px 125 x 2. Px 200 x 1 (red bull special) T5 Classic x 1. Vespa Cosa x 2.CF moto 650mt
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@tom_jones avatar
Vespa GTS 150 3v SUPER. Vespa V100 x 1. Lambretta Li150 x 1. Px 125 x 2. Px 200 x 1 (red bull special) T5 Classic x 1. Vespa Cosa x 2.CF moto 650mt
Joined: UTC
Posts: 392
Location: Perth Australia
UTC quote
waspmike wrote:
epditt wrote:
Sorry - total newbie on motorcycle engines -
Seems the answer is go to the dealership and complain and say it didn't leak before the first service. If it is a common fault they will know exactly what to do.
I concur. If you're not sure get it back to the dealer. I know its a hassle but in the meantime download a workshop manual from this forum. Have a read and things will become a lot clearer.

Good luck.

Tom.
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Molto Verboso
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Im thinking the sprint engine has the valves checked at 1st service , Possibly leak from rocker cover
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Clean it up good with degreaser, dawn dishwashing soap, or whatever you have lying around. Then take a look at it after a short ride. Still a mystery? Clean again and try to dust the area with baby powder, corn starch, etc.. to help you find the source.
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