WHAT IS CAUSING HESITATION AND SHUDDERING ON ...

  • Tiny
  • beverlygeist
  • 1991 Ford F-150
  • 200,000 miles

What is causing hesitation and shuddering on acceleration?

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Monday, January 14th, 2013 AT 2:09 AM

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  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

It could be many things. Does the engine misfire? When was the last tune up? Have you checked fuel pressure? Any vacuum leaks?

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Monday, January 14th, 2013 AT 2:24 AM
  • Tiny
  • beverlygeist
  • Member

Replaced distributor cap, it's a little loose could that be a problem? The engine hasn't ever misfired. Last tune up today with spark plugs and plug wires. Last week oil filter changed due to oil drip. Checked for vacuum leaks; but not by professional. Put new fuel pressure gauge on last month. Any new thoughts?

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Monday, January 14th, 2013 AT 3:21 AM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

How loose is the distributor cap? That shouldn't be loose.

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Monday, January 14th, 2013 AT 3:30 AM

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