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The Place for Model-A Ford Carburetors

Problems when driving 5-35 MPH

  • Gas Adjusting Valve is open too much or seat is not honed to let needle seal.
  • Lower Casting Bowl Passage is restricted to Secondary Well via GAV Seat Hole.
  • Compensator Jet Orifice contains dirt or rust, or is too small.
  • Compensator Jet Orifice is too large.
  • Gas Adjusting Valve Brass Seat is missing from carburetors built through 1929.
  • Lower Casting Comp. Jet Passage is restricted to Cap Jet via Secondary Well.

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