14
Oil
Gas
Testing Faulty Fuel Delivery
Faulty or
Clogged
Combustion
Head & Nozzle
Faulty Fuel
Pump
Line
Restriction
Wrong Type
of Fuel
Leak in
Suction
Line
Kinked
Tubing
Shut Off
Valve
Closed
Leaking or
Dirty Suction
Line,
Check Valve
Clogged
Oil
Pump
Strainer
Sediment in
Tank,
Contaminated
Oil
Faulty
Installation
Clogged
Supply
Line
Filter
Defective,
Clogged or
Wrong
Nozzle
Kinked Tubing
Wrong Orifice
Clogged Orifice
Shut Off Valve Closed
Defective Gas Valve
Improper Pressure
Input, Output
Restricted Combustion
Air Intake
Crack
Loose Fitting
Too High Vacuum,
Excessive Lift
Restriction,
Kink, Etc.
Shut Off Valve
Installed in
Wrong Direction
2 Line Pump on
1 Line System
or Vice Versa
Improper
Venting of
Tank
Undersized
Tubing
Too Long
Tubing Run,
Excessive
Oil Lift
By-Pass Plug
Installed in
Return Port
Suction and
Return Lines
Reversed
Empty Tank
Air in Line
Loose Supply Line
Connections
Test Burner Motor