Leaking oil at top of engine on a plug Bolt?

Tiny
BANKSY007
  • MEMBER
  • 2001 RENAULT CLIO
  • 93,000 MILES
On the engine looking from under bonnet, behind oil filler cap, thers a black plastic square with a cable attached, and the bolt that screws into engine the oil is coming from there? What is that? I thought it was oil pressure switch but pics look different to what I can see, thanks in advance
Saturday, April 28th, 2012 AT 12:11 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
I don't have any information on your vehicle but based on the wire attached to it, it most likely is a sensor and if you remove the bolt and take the sensor out, you should see an O-ring which should be bad and causing the oil leak.
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Saturday, April 28th, 2012 AT 1:04 PM

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