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Vacuum hose diagram needed?

Tiny
DAVENOOB
  • MEMBER
  • 2013 CHEVROLET IMPALA
  • 3.6L
  • V6
  • AUTOMATIC
  • 150,000 MILES
I am prepared to do a pressure test on my vacuum lines looking for a leak. I'm not sure where all the vacuum lines are located. Could you please provide me with diagram(s) to show me all the lines to be checked and located. I'm using a vacuum pump tester and brake/steering fluid bleeder for these tests.
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Thursday, April 4th, 2024 AT 5:06 PM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

For some reason, I'm not showing the vacuum schematics for this vehicle in two different manuals. Have you checked for labels under the hood?

Regardless, take a look through this link, it explains how to check and locate a leak:

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

Let me know if that helps.

Take care,

Joe
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Friday, April 5th, 2024 AT 8:26 PM
Tiny
DAVENOOB
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  • 190 POSTS
Yes, you shared that with me before thanks. It would be great if I knew where the corresponding components are located on my car. I don't know what is or isn't a vacuum line or is a vacuum line. I've searched the web and the cars they always show are set up totally different, so again I don't know where to spray carb cleaner. I know where the head gasket and such is but the whole vacuum system is a mystery to me.
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Saturday, April 6th, 2024 AT 6:29 PM
Tiny
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  • 190 POSTS
Could you find a pic or a few of my engine and circle or highlight where the certain sensors and places where vacuum lines would be and where I should spray the carb cleaner. That would be super helpful. Thanks
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Sunday, April 7th, 2024 AT 3:49 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

In pic 1, you will see the cover at the top of the engine. Remove the oil cap and gently pull up on the cover to remove it. Then replace the cap.

Pics 2, 4, and 5 show some of the general vacuum hoses. Pic 3 is an exploded view of the intake manifold being removed. Spray around where the manifold and engine block are bolted together. The last two pics show the EVAP hoses that run from the rear of the vehicle (fuel tank/Charcoal canister) to the engine compartment.

When you do this, be careful not to spray carb cleaner directly on extremely hot components such as the exhaust manifold, catalytic converters, or exhaust system. There is a risk of fire, so be careful and do it when the engine is cold and just started in areas with little access.

Let me know.

Joe
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Monday, April 8th, 2024 AT 7:30 PM
Tiny
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  • MEMBER
  • 190 POSTS
Thanks, I noticed an oil leak from the back passenger side of car thinking it's coming from head gasket or intake gasket maybe. I'll include a picture should I start a new question about the spot of the oil leak?
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Wednesday, April 10th, 2024 AT 12:46 PM
Tiny
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Here is a video of where about the oil leak is coming from. The end of the video shows clean looking oil just under power steering res and behind the main radiator hose going to engine from top of radiator.
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Wednesday, April 10th, 2024 AT 6:15 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

I will need you to start a new thread with the new question. However, when you do it, let us know if the oil could be coming from a valve cover as well. The intake can leak and cause this to happen, but it isn't nearly as often as a valve cover. The head gasket would be even less likely.

Here is the link to start a new thread:

https://www.2carpros.com/questions/new

Take care,

joe
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Wednesday, April 10th, 2024 AT 6:16 PM
Tiny
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Hey, so, I'm not sure what's going on with the site, but I've tried to upload that video again 8 times after 54 minutes and not loading last time idk what to do. Is there anyway I can link the video from this thread?
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Thursday, April 11th, 2024 AT 7:44 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

Yes, you can link the video. I'm not sure why it isn't uploading for you.

Go ahead and send me a link and I'll watch it.

Joe
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Thursday, April 11th, 2024 AT 7:48 PM

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