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After replacing the oil pressure sensor the engine has a ticking noise and idles rough

Tiny
WILLIE HENSON
  • MEMBER
  • 2011 GMC YUKON
  • 5.3L
  • V8
  • 2WD
  • 215,155 MILES
My oil pressure sensor went out so I removed the intake and changed it. After putting everything back together I started the vehicle and now it Idles rough and I have a ticking noise coming from my engine. Also a new code p0307 it has a misfire in 7. I took it back apart and cleaned my injector it’s running rough. Any ideas what I could do next?
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Saturday, February 20th, 2021 AT 4:38 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

Since you had it apart and not it's running rough, the first thing I would be checking for is an engine vacuum leak. It's possible a vacuum hose was left off or damaged.

Here is a link that shows how to find a leak:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let me know what you find. Also, let me know if the misfire is gone or if there are any new codes.

Take care and God Bless,

Joe
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Sunday, February 21st, 2021 AT 4:56 PM
Tiny
WILLIE HENSON
  • MEMBER
  • 4 POSTS
So I have fixed the problem it ended up being a misfire on all 8 cylinders and my fuel injectors was still dirty, but now I’m just left with a tick that came from nowhere. Any ideas what that could be? I started driving it and the tick stops after I hit the speed limit but starts back up when I come to a stop again.
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Sunday, February 21st, 2021 AT 5:11 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

If possible, record what you hear and upload it for me to hear. Hopefully, I'll be able to identify it.

I will watch for your reply.

Take care,
Joe
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Sunday, February 21st, 2021 AT 6:35 PM
Tiny
WILLIE HENSON
  • MEMBER
  • 4 POSTS
This is what I have:
Video (Click to make bigger)
Thumb
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Sunday, February 21st, 2021 AT 6:43 PM
Tiny
WILLIE HENSON
  • MEMBER
  • 4 POSTS
As you can hear from the video the tick stops once I get so far up on the RPMs then comes back as the RPMs goes back down.
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Sunday, February 21st, 2021 AT 6:45 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
I hear it. Do me a favor. Take a long-handled screwdriver or even a piece of 2x4 and place it on one valve cover at a time to see if you can tell which side it is coming from. I am thinking it is a loose rocker arm.

I know you replaced the oil pressure sensor. Was there ever a point the engine didn't have oil pressure?

Let me know.

Joe
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Sunday, February 21st, 2021 AT 7:12 PM

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