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    1. 05-04-2010 #1
      66chupacabra
      66chupacabra is offline Registered User
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      power loss while turning

      Hello all. i have a 66 lemans with a 455 and dual quads with a mechanical fuel pump. my question would be why would i have loss of power when i turn. its more pronounced when i turn left than right. however, as soon as i straighten out it sputters then runs good. any ideas.
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    2. 05-05-2010 #2
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      camcojb
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      Quote Originally Posted by 66chupacabra View Post
      Hello all. i have a 66 lemans with a 455 and dual quads with a mechanical fuel pump. my question would be why would i have loss of power when i turn. its more pronounced when i turn left than right. however, as soon as i straighten out it sputters then runs good. any ideas.
      If you're speaking of low speed turning it's likely the ps pump pulling the engine down.



      Jody
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    4. 05-05-2010 #3
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      John Wright
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      May need some baffling in the fuel tank?...not as pronounced in a carbed situation as in FI...

      ...maybe float levels too high and fuel is sloshing over causing the stumble?

      maybe the jets are uncovered during the turn and you need jet extensions?

      just throwing out some ideas.
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    5. 05-05-2010 #4
      6'9"Witha69's Avatar
      6'9"Witha69
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      Quote Originally Posted by camcojb View Post
      If you're speaking of low speed turning it's likely the ps pump pulling the engine down.

      Jody
      +1. A poorly martched pump/valving can cause this during low speed turning. The more you turn, the worse it gets.
      Nick R.
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