Cessna 182 - Low Oil Pressure; Low Fuel Pressure

3-6
Low Oil Pressure
15. Low oil pressure accompanied by normal oil temperatures usually indicates a pressure
gauge or relief valve malfunction. Low pressure and high or rising oil temperatures are
indicative of oil starvation and imminent engine failure. Fluctuating pressure is indicative of oil
pump cavitation and imminent oil exhaustion.
LOW / FLUCTUATING OIL PRESSURE
ACTION
CHECK
NOTES
1. Power
Reduce
Continue flight at lowest feasible power setting.
2. Oil temperature
Monitor
If temp remains normal suspect gauge or relief
valve malfunction.
3. Land as soon as practicable
WARNING
If low pressure is accompanied by high and rising oil temperatures,
anticipate imminent engine failure. Land as soon as possible.
Figure 3-5 Low Oil Pressure Actions
Low Fuel Pressure
16. Low fuel pressure or loss of fuel pressure indication may signify the failure of the engine
driven fuel pump. This may also indicate a malfunction of the fuel pressure sensor, or a
problem with the EDM930. To determine if the problem is instrumentation related, determine
whether fuel flow is normal or whether there are secondary indications, such as a rough
running engine or loss of power. Selecting the auxiliary fuel pump ON for a short period and
then OFF may clear the problem.
LOW FUEL PRESSURE
ACTION
CHECK
NOTES
1. Check Secondary Indications
Check Fuel Pressure
Check Fuel Flow Rate
Confirm Smooth
Running
With throttle fully closed, fuel
pressure as low as 3 psi is
entirely normal.
If fuel flow rate is normal,
suspect an unserviceable
pressure sensor. Selecting the
auxiliary fuel pump ON for a
short period and then OFF may
clear the problem
If problem continues:
2. Auxiliary Fuel Pump
ON
3. Land as soon as possible
Figure 3-6 Low Fuel Pressure Actions