Fuel Cylinder Manual Control Valve (CNG): Description and Operation

NOTE: The descriptions and specifications contained were in effect at the time this information was approved for printing. Ford Motor Company reserves the right to discontinue models at any time, or change specifications or design without notice and without incurring obligation.

Adjustable Tuning Tee






The adjustable tuning tee allows a proportioned percentage of the fuel flow to each of the fuel rails. There are two individual adjustment screws, one for each of the two output fuel lines.

NOTE: For the 6.8L Super Duty the adjustment screws have been preset in the neutral position. No tuning procedure exists for the 6.8L engine. Do not adjust the screws for the Super Duty.