1993 CHEVROLET DYNASTY engine

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Page 1745 of 2438

CHEVROLET DYNASTY 1993  Service Manual (1) Loosen fuel filler cap to release fuel tank pres- 
sure. (2) Disconnect injector wiring harness connector at
edge of throttle body (Fig. 4). (3) Connect a jumper wire between terminal Num-
ber 1 o

Page 1746 of 2438

CHEVROLET DYNASTY 1993  Service Manual FUEL SYSTEM PRESSURE
Fuel system pressure is regulated at the fuel rail 
or throttle body by a fuel pressure regulator. Refer to
the Fuel System Pressure Chart for pressure specifi-
cations. The chart

Page 1747 of 2438

CHEVROLET DYNASTY 1993  Service Manual ² If pressure is at least 5 psi higher than reading 
recorded in step (4), replace fuel filter. ²  If no change is observed, gently squeeze the re- 
turn hose. If fuel pressure increases, replace pr

Page 1748 of 2438

CHEVROLET DYNASTY 1993  Service Manual CAUTION: When using the ASD Fuel System Test, 
the Auto Shutdown (ASD) Relay remains energized
for either 7 minutes, until the test is stopped, or un-
til the ignition switch is turned to the Off posi

Page 1754 of 2438

CHEVROLET DYNASTY 1993  Service Manual FUEL TANKS INDEX
page page 
Flexible Fuel Vehicles  ..................... 14 
Fuel Pump Module  ....................... 18 
Fuel Reservoir  ........................... 18 
Fuel System Pressure Release

Page 1755 of 2438

CHEVROLET DYNASTY 1993  Service Manual WARNING: FUEL FILLER TUBE CAPS DESIGNED 
FOR GASOLINE ONLY VEHICLES CANNOT BE
USED ON FLEXIBLE FUEL AA-BODY VEHICLES.
WHEN SERVICING THE FUEL SYSTEM OF A FLEX-
IBLE FUEL VEHICLE, ONLY USE ORIGINAL EQU

Page 1758 of 2438

CHEVROLET DYNASTY 1993  Service Manual INSTALLATION
WARNING: FUEL TANKS DESIGNED FOR GASO- 
LINE ONLY VEHICLES CANNOT BE USED ON
FLEXIBLE FUEL AA-BODY VEHICLES. WHEN SER-
VICING THE FUEL SYSTEM OF A FLEXIBLE FUEL
VEHICLE, ONLY USE ORIGINAL

Page 1761 of 2438

CHEVROLET DYNASTY 1993  Service Manual INSTALLATION
WARNING: FUEL PRESSURE RELIEF/ROLLOVER 
VALVES DESIGNED FOR GASOLINE ONLY VEHI-
CLES CANNOT BE USED ON FLEXIBLE FUEL AA-
BODY VEHICLES. WHEN SERVICING THE FUEL
SYSTEM OF A FLEXIBLE FUEL V