Ecoboost Performance Forum

Ecoboost Performance => Troubleshooting, Maintenance, TSB Articles => Troubleshooting => Topic started by: Mml665 on December 22, 2022, 01:32:15 PM

Title: Hissing Sound and oil leak
Post by: Mml665 on December 22, 2022, 01:32:15 PM
So. I fired up the MKS and I hear a hissing sound.  There is a small puddle underneath the left front of car near serpentine belt area, light brownish/gold feels like oil and has a slight fuel smell.
Title: Re: Hissing Sound and oil leak
Post by: Macgyver on December 22, 2022, 02:03:09 PM
Any tail pipe smoke ?
Title: Re: Hissing Sound and oil leak
Post by: Mml665 on December 22, 2022, 10:32:22 PM
Quote from: Macgyver on December 22, 2022, 02:03:09 PM
Any tail pipe smoke ?
No
Title: Re: Hissing Sound and oil leak
Post by: Macgyver on December 23, 2022, 11:58:40 PM
Timing chain cover oil leak or turbo oil line leak?
Title: Hissing Sound and oil leak
Post by: Mml665 on December 24, 2022, 07:21:34 PM
Quote from: Macgyver on December 23, 2022, 11:58:40 PM
Timing chain cover oil leak or turbo oil line leak?
Would turbo oil line cause the hissing/air leak sound.
Title: Hissing Sound and oil leak
Post by: Mml665 on December 27, 2022, 10:58:33 AM
Quote from: Macgyver on December 22, 2022, 02:03:09 PM
Any tail pipe smoke ?
It is winter here in Michigan so  I didn
Title: Re: Hissing Sound and oil leak
Post by: Macgyver on December 27, 2022, 12:26:01 PM
Not a great time to work on cars for sure.

Hissing and an oil leak could be a bad turbo or two separate things.

The oil leak should be easy to spot once you can get under it. Then maybe the hissing will found as well.
Title: Hissing Sound and oil leak
Post by: Mml665 on December 30, 2022, 01:27:14 PM
Macgyver, could it be an exhaust leak?
I apologize for my previous reply it seems when I quote someone
Title: Re: Hissing Sound and oil leak
Post by: Macgyver on December 30, 2022, 09:52:35 PM
It sure could.

There is a valve / T near the brake booster that "Hisses "
Title: Hissing Sound and oil leak
Post by: Mml665 on January 04, 2023, 11:38:00 AM
I
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