Possible Cause
WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 1992 Pontiac Trans Sport, 1992 Oldsmobile Silhouette, 1992 Oldsmobile Bravada, 1992 GMC Yukon, and 1992 GMC Vandura Special. However, it is still accessible from the selected car via links, so may be relevant.
No voltage to fuel solenoid.
Restricted air filter.
Faulty glow plugs or glow plug controls.
Plugged fuel return system.
No fuel to nozzles.
No fuel to injection pump.
Clogged fuel tank filter.
Incorrect or contaminated fuel.
Incorrect pump timing.