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Engine vibrating really bad

Tiny
MADSENA
  • MEMBER
  • 2005 FORD F-150
  • 180,000 MILES
My 2005 F-150 FX4 is vibrating really bad at 1000 rpm's. Once I get above 1000 rpms it goes away. What could this be and how can I fix this?
Friday, February 10th, 2012 AT 8:40 PM

3 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
It sounds like you have a bad intake valve which is allowing gases to contaminate the intake charge to other cylinders.
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Friday, February 10th, 2012 AT 10:11 PM
Tiny
MADSENA
  • MEMBER
  • 2 POSTS
Good call, I did a compression test that you guys have on your site:

https://www.2carpros.com/articles/how-to-test-engine-compression

and found a low cylinder, you guys are great!
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Friday, February 10th, 2012 AT 10:50 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
We aim to please here at 2carpros. Com!
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Saturday, February 11th, 2012 AT 8:15 AM

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