engine hesitates or misfires

2001 LINCOLN TOWN CAR
99,083 MILES • V8 • 2WD • AUTOMATIC
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JRELIHAN3
  • MEMBER
  • 15 POSTS
engine hesitates / misses at speeds between 40 and 45 mph. in all other aspects, car performs as it should
Jul 11, 2009 at 5:13 PM
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KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
There are a number of things that can cause misfires or hesitation, but the basic items are injectors, fuel pressure, spark plugs, and vacuum leaks.

So, I will attach all this info here, but we should start with pulling the plugs and inspecting them.

I will attach a chart that will help tell us if they are an issue.

https://youtu.be/4ktw1X4W_-k

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-change-spark-plugs

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Please pull the plugs and see what they look like. If they are okay then run through the rest of this info and we can go from there.

Thanks
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Apr 19, 2022 at 6:05 PM
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JRELIHAN3
  • MEMBER
  • 15 POSTS
Changed the plugs/air filter/etc. Worked wonders! The back plugs were tough to get out/in but all in all a satisfying job. Thanks so much for your help.
Apr 19, 2022 at 6:05 PM
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