EDI TSG-416 Service Manual page 124

Diagnostic Aids
Fuel Lock Solenoid: The fuel lock is an
electronic solenoid that is opened to allow fuel
flow when the key is turned ON. High
temperatures may cause the solenoid to
become intermittent, not opening to supply
sufficient fuel pressure.
Fuel Filter: There is a filter element located in the inlet
of the fuel lock which may become clogged and limit
fuel flow, especially at low tank pressures. Check the
filter and replace as necessary.
TSG‐416 FUEL SYSTEM
Mixer Assembly (Carburetor): It is possible that a
backfire may have caused the fuel valve to partially
come off of its retainer and restrict fuel, check the
mixer fuel valves, see section 475-1 for disassembly.
Fuel Line Restrictions: The vehicle specifications
table specifies the fuel line to be a certain size. If the
fuel line from the tank to the fuel lock is not the proper
size, or any valves or fittings with flow restrictive
characteristics are used, the fuel flow will not be
sufficient to the converter with low tank pressure.
Correct any fuel line or fitting restrictions.
Regulator Assembly: If no other problems have been
identified, replace the fuel management assembly
with a known good part of the same pressure range.
Retest.
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