leaking oil at top of engine on a plug bolt?

2001 RENAULT CLIO
93,000 MILES
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BANKSY007
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  • 3 POSTS
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
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Apr 28, 2012 at 12:11 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
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.
Apr 28, 2012 at 1:04 PM
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