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I changed the spark plugs and now I a vaccum leak

Tiny
DADDYDURON
  • MEMBER
  • 2004 NISSAN QUEST
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
I changed the plugs and since I had to remove the intake manifold there is now a vacuum leak somewhere or I do not know. I checked but everything looks to be okay, but I can not figure out the problem. Any ideas?
Saturday, February 27th, 2016 AT 12:07 AM

5 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I suggest using choke cleaner and spray around intake, you may have pinched a gasket or it should have been replaced when you reinstalled the intake.
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Saturday, February 27th, 2016 AT 6:56 AM
Tiny
DADDYDURON
  • MEMBER
  • 3 POSTS
Okay, thanks for your quick reply. So I spray choke cleaner until I find the leak also can I use some intake silicone over the metal gasket?
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Saturday, February 27th, 2016 AT 9:15 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I would not use silicone as it messes up the O2 sensors. Replace the gaskets if bad.
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Saturday, February 27th, 2016 AT 11:15 AM
Tiny
DADDYDURON
  • MEMBER
  • 3 POSTS
Okay, thanks again for your response. I will get another gasket. Thank you for your input.
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Saturday, February 27th, 2016 AT 11:19 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Here is a guide on how to find a vacuum leak

www. Youtube. Com/watch?V=xN5pcM-5bso

Let us know how it turns out so it will help others
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Monday, March 7th, 2016 AT 4:58 PM

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