Demon Fuel Systems 5563020GC - Manual (Page 6)

6
Connecting the Fuel Lines
Always use lines and fittings that are built for automotive use, and compatible with your type of fuel.
Stainless steel braided, or push-lock type reinforced hose with AN swivel connections are
recommended on all fuel lines. Do not use thread lockers, sealing compounds, or Teflon tape on
AN flare fittings. When installing fuel bowl inlet fittings, use only the sealing washers or o-rings
provided with the fitting.
In most cases, a drop of oil to prevent thread galling
is all that’s necessary when installing pipe
threaded fittings. However, if a thread sealant is used on pipe fittings, use extreme caution to prevent
any tape or compound from entering the internal flow area. Remember to check for leaks when the
system is under pressure. If a leak is detected, replace the malfunctioning part. When installing new
fuel lines, be sure to flush the lines clear of any debris that might remain from the hose cutting or
assembly process.
Vacuum Lines
All Mighty Demon
™ carburetors have three vacuum sources on the baseplate that can be used for
PCV, distributor vacuum, diagnostics, or any other vacuum operated accessories (Fig. 9). The large
fitting on the back of the baseplate, and the rear most fitting of the two small fittings on the side of the
baseplate, are direct (below the butterfly) manifold vacuum sources. The front small fitting on the side
of the baseplate, opposite the throttle linkage, provides a ported (above the butterfly) vacuum source
(use this port for the vacuum on a vacuum advance distributor). Be sure all vacuum lines are
connected or plugged before you attempt to start the engine.
Figure 9