Bravada 2WD L6-4.2L VIN S (2002)
Engine Oil Pressure: Testing and Inspection
Oil Pressure Diagnosis
Oil Pressure Diagnosis and Testing
Low or No Oil Pressure
The following can cause low or no oil pressure:
^
Low oil level-fill to the full mark on the oil level indicator.
^
Slow idle speed
^
Incorrect or malfunctioning oil pressure switch- replace the oil pressure switch.
^
Incorrect or malfunctioning oil pressure gage- replace the oil pressure gage.
^
Improper oil viscosity or diluted oil
-
Install oil of proper viscosity for expected temperature.
-
Install new oil if it is diluted.
^
The oil pump is worn or dirty-clean or replace the oil pump.
^
The oil filter is plugged-replace the oil filter.
^
The oil pickup screen is loose or plugged- replace the oil pickup screen.
^
A hole in the oil pickup tube-replace the oil pickup tube.
^
Excessive bearing clearance-replace the bearings.
^
Cracked, porous, or plugged oil galleries-repair or replace the engine block.
^
The gallery plugs are missing or improperly installed-install or repair as necessary.
^
The pressure regulator valve is stuck.
-
Check the pressure regulator valve for sticking in the bore.
-
Check the bore for scoring and burrs.
^
The camshaft is worn or poorly machined- replace the camshaft.
^
Worn valve guides-repair as needed.