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Leaking oil underneath the passenger side of the vehicle?

Tiny
BUYRITEAUTO21
  • MEMBER
  • 2007 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 226,000 MILES
I noticed some oil leaks underneath the passenger side of the vehicle. Some stains were up to 1-1/2 inches. It has happened after every time I drive it. The back corner of the engine looks like it has oil residue mixed with grime on the outside. I didn’t locate any source. Could you give any advice on where this would be coming from?
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Thursday, October 26th, 2023 AT 11:46 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Yes, it sounds like it could be the valve cover, oil filter, drain plug, or oil pressure sender. Here is a guide to help and I have included the location of each so you can use a flashlight to check for the oil leak source:

https://www.2carpros.com/articles/engine-is-leaking-oil

This is how to raise the car up:

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

This video shows the valve cover being replaced:

https://youtu.be/RjnW9C7RFdc?si=MZutEM7B7ytwsL7L

Check out the images (below). Please let us know what happens.
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Thursday, October 26th, 2023 AT 4:58 PM

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