GTS 250 Oil Pressure Sensor/Oil Leak Question
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2007 Vespa GTS 250ie
Joined: 17 Jul 2008
Posts: 35
Location: Owings Mills, MD
Mon Jun 24, 2019 1:08 pm quote
The rubber boot that covers the oil pressure sensor leads to a bundle of cables and then off to somewhere beyond my knowledge. There is a wire inside the boot that connects to the sensor. My question, is there any way oil could travel through the rubber hose leading to the boot and out the boot near the sensor? I have a small oil leak thatís been going on for a while. It will drop a little after riding. Drops down the kick stand, inside the muffler, etc. I noticed there was a drop of oil at the end of the boot. Would this be coming from around the sensor itself or through the rubber hose leading to the boot? Thanks in advance!


Granturismo 218
Joined: 04 Feb 2013
Posts: 6141
Location: NWAOK
Mon Jun 24, 2019 11:34 pm quote
Clean everything very well and spray the part of the engine where the leak is with foot powder spray. You will find the leak.
2009 LX 150, 2008 GTS 250
Joined: 19 Jun 2011
Posts: 740
Location: Birmingham, Alabama, USA
Wed Jun 26, 2019 1:46 pm quote
Both of my Vespas developed a leak at the oil pressure sensor. One sensor leaked at the copper gasket requiring only tightening with a wrench. The other leaked thru the sensor body at the terminal and got replaced. The oil wonít be coming from the wire bundle.

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