engine vibrating really bad

2005 FORD F-150
180,000 MILES
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MADSENA
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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?
Feb 10, 2012 at 8:40 PM
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FIXITMR
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It sounds like you have a bad intake valve which is allowing gases to contaminate the intake charge to other cylinders.
Feb 10, 2012 at 10:11 PM
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MADSENA
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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!
Feb 10, 2012 at 10:50 PM
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FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
We aim to please here at 2carpros.com!
Feb 11, 2012 at 8:15 AM
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