OP
UTC

Member
Vespa VNB 1962
Joined: UTC
Posts: 5
Location: australia
 
Member
Vespa VNB 1962
Joined: UTC
Posts: 5
Location: australia
UTC quote
Hello,

My vespa has just developed an oil leak. Its done about 1000Km since a full engine rebuild 2 years ago.

Oil drips from from where the accelerator, rear foot brake & gear change cable run through the underside of floor pan to the engine of the scoot ( see photo ) There is no oil leak I can see from visible engine areas of the scoot and no oil drops on the floor below the engine.

Its a 1962 Vespa VNB 3T 125 2 stroke. It looks like gear box oil as the oil on the floor doesn't have a fuel smell.

I have put a snake camera in where the carby air inlet hose goes thru the body to check if the fuel tap below the fuel tank is leaking - seems ok.

All visible engine gaskets look unstained.

Any advice is appreciated or where to look.

Thanks

Conrad
oil leak
oil leak
@garncarz avatar
UTC

Molto Verboso
1964 Allstate Cruisaire, 2022 Husqvarna Vitpilen 401, 1972 Suzuki T500J
Joined: UTC
Posts: 1024
Location: York, PA (the intellectual center of the universe)
 
Molto Verboso
@garncarz avatar
1964 Allstate Cruisaire, 2022 Husqvarna Vitpilen 401, 1972 Suzuki T500J
Joined: UTC
Posts: 1024
Location: York, PA (the intellectual center of the universe)
UTC quote
Not sure how you would have any fluid, other than fuel coming from that spot. Have you cleaned or lubed your cables lately. Grasping at straws.

Hive?
@srd0060 avatar
UTC

Hooked
2022 HPE 300 tech/ 91 PX 200e/97 PX 200e
Joined: UTC
Posts: 109
Location: Australia
 
Hooked
@srd0060 avatar
2022 HPE 300 tech/ 91 PX 200e/97 PX 200e
Joined: UTC
Posts: 109
Location: Australia
UTC quote
is it coming out of the bottom of the fuel and oil tank and dripping down?
UTC

Veni, Vidi, Posti
Joined: UTC
Posts: 7067
Location: Tega Cay, SC
 
Veni, Vidi, Posti
Joined: UTC
Posts: 7067
Location: Tega Cay, SC
UTC quote
Slow fuel line/tank/petcock leak. The gasoline evaporates out leaving the oil behind. Once enough collects, it starts leaking out of the bottom. Pull the tank and you will be able to figure it out.
OP
UTC

Member
Vespa VNB 1962
Joined: UTC
Posts: 5
Location: australia
 
Member
Vespa VNB 1962
Joined: UTC
Posts: 5
Location: australia
UTC quote
Thanks for replies.
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