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Hooked
1968 Sprint 150
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Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 244
Location: Vancouver, BC
UTC quote
Moving to a new storage space and found the slightest oil drip from the casings and then down towards the rear brake lever and then to the tyre. Literally only 6 drips but has anyone ever solved this slight leak with the best gaskets money can buy?
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'74 50s x3 '87 PK125XL '92 PK50XLS Plurimatic - & - '58 AllState '68 Sprint '66(?) Super125 '72 DanMotor Super150 and '04 Bajaj LML hybrid
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'74 50s x3 '87 PK125XL '92 PK50XLS Plurimatic - & - '58 AllState '68 Sprint '66(?) Super125 '72 DanMotor Super150 and '04 Bajaj LML hybrid
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Yes, probably more than once. Not sure what it has to do w/ your six drops of oil though. More likely just a seal that's not new but still doing pretty good. I think what you are experiencing is more or less normal unless over just a couple of days. How long was it stored?
OP
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Hooked
1968 Sprint 150
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Posts: 244
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
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Posts: 244
Location: Vancouver, BC
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Stored since January.
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'64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150)
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@moto64 avatar
'64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150)
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If it has just been sitting, the leak has to be at or below the oil level which is way down low at the fill point.
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'58 VBA
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Location: Chico CA
 
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@grumpnut avatar
'58 VBA
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Posts: 483
Location: Chico CA
UTC quote
Some of those fiber drain plug gaskets weep oil. I use 8x14mm copper washers now.
OP
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Hooked
1968 Sprint 150
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Posts: 244
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
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Posts: 244
Location: Vancouver, BC
UTC quote
engine case using copper gasket instead of fibre gasket might work better.
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Location: Los Angeles
 
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@ray8 avatar
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Location: Los Angeles
UTC quote
splash_wave wrote:
engine case using copper gasket instead of fibre gasket might work better.
"If doesn't drip it isn't a Vespa."
Not my quote Razz emoticon

I have three bikes that drip a bit.
One has no carb filter and jetted on the rich side. Blow-back runs down to the floor (instead of being caught by a filter), like a few drips or so of oil (fuel evaporates before hitting the floor) over a week after riding.
Another has a few drips leak from idk where between the cases. PO rebuild with a paper gasket.
Another leaks from the clutch cover/lever. If you're seeing oil on the tire I'd suspect that. Definitely worth inspecting. Oil on the bottom of the lever is a tell.

Older cases can be sealed pretty damn well with VERY LITTLE sealant and a fiber Piaggio gasket.
There's also the rubberized aluminum Athena gasket.
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