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Gas in oil?

Tiny
JSISCO
  • MEMBER
  • 2018 CHEVROLET 1500
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 62,820 MILES
Getting a lot of gas in my oil. Replaced hp fuel pump, replaced all injectors so far nothing has fixed it.
Sunday, May 5th, 2024 AT 10:54 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
There will always be a fuel smell to the oil, can I ask if the oil level keeps going up? If not, you may not have a problem. Can I ask how you determined there was gas in the oil? Please let me know. There is only one way for the gas to get into the oil and that is through the fuel injectors. Is the engine running okay?
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Monday, May 6th, 2024 AT 11:32 AM
Tiny
JSISCO
  • MEMBER
  • 2 POSTS
Yes, it runs fine and the oil was at the full mark now it is 7 inches over full.
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Monday, May 6th, 2024 AT 4:22 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Opps, yep that is not good. So, it sounds like the high-pressure fuel pump main seal is bad and leaking into the engine, here is how to change it out correctly. I would get a new pump not rebuilt. Check out the images (below). Please let us know what happens.
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Monday, May 6th, 2024 AT 8:04 PM

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