Timing, Carb Jetting......HELP

Discussion in 'Engine, Fuel and Exhaust' started by mbwebb, Jun 4, 2008.

  1. mbwebb

    mbwebb Member

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    Had problems with carb jetting before with V&H Longshots. To make a long story short I ended up putting a stock slide and spring back in with a 45 slow and a 180 main. Everything seemed to be fixed. Decided to switch to V&H Big Shots. Did not mess with jetting. When I crack the throttle from an idle it semi stumbles and then picks back up. Also after it is warm when I turn it off and then restart it, it doesn't idle the best until I crack the throttle a little. The enricher also does not pick up the idle like before. Could a change in pipes make that much difference?
     
  2. Doc 1

    Doc 1 Member

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    Absoulity....the pipes make a huge difference especially when the diameter is larger than 1 3/4''
     
  3. mbwebb

    mbwebb Member

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    Any ideas on where to start?
     
  4. glider

    glider Veteran Member

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    Without having it set up on a dyno, it's difficult to tell where the problem is. It may respond to an increase to a 46 low jet but then again it could be the loss of back pressure with those pipes causing the problem too. You can get a 46 low jet at J&P cycles for a few bucks and see where that takes you assuming your accel pump is working properly.