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What is causing hesitation and shuddering on.

Tiny
BEVERLYGEIST
  • MEMBER
  • 1991 FORD F-150
  • 200,000 MILES
What is causing hesitation and shuddering on acceleration?
Monday, January 14th, 2013 AT 2:09 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 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
  • 1 POST
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
  • MECHANIC
  • 109,755 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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