23550-U3330-71 | Genuine E-Controls® Electronic Pressure Regulator

In fuel systems (like LPG/CNG forklifts), it helps:
Deliver the right amount of fuel at the right pressure.
Improve combustion.
Reduce fuel waste and harmful emissions.

5. Electronic Integration
Can be controlled via:
Engine control modules (ECUs)
Programmable logic controllers (PLCs)
Sensors / feedback loops
Ideal for automated or smart systems.

6. Repeatability & Consistency
Maintains consistent output over time and varying conditions, unlike mechanical regulators that may drift or wear out.

1. Hard Starting or Failure to Start
Engine cranks but doesn’t fire.
Not enough fuel is reaching the engine due to pressure regulation failure.

2. Engine Stalling
Sudden stalling during idle or under load.
Caused by erratic or insufficient fuel/gas flow from a faulty EPR.

3. Rough Idle or Hesitation
The engine surges, runs rough, or struggles to maintain a consistent idle.
May be due to fluctuating pressure output from the regulator.

4. Loss of Power Under Load
Engine runs but lacks power when accelerating or lifting (in forklifts).
The EPR may not be increasing fuel pressure in response to higher demand.

5. Check Engine Light or Error Codes
Fault codes related to:
Fuel pressure
Fuel system lean/rich conditions
Communication loss with EPR (if electronically monitored)

6. Excessive Fuel Consumption or Emissions
Inaccurate fuel delivery leads to:
Rich or lean mixtures
Poor combustion
High emissions (and possibly failed emissions tests)

7. Unusual Noises
Hissing, clicking, or pulsing noises from the regulator itself may indicate:
Internal valve malfunction
Leaking diaphragm
Solenoid failure

8. Fuel Leaks or Smell (LPG/CNG Systems)
Physical damage to the EPR housing, cracked seals, or failed fittings can cause gas leaks.
Especially dangerous in LPG/CNG-powered machines.

9. No Voltage / Signal Response
If the regulator uses a signal from the ECU and it doesn’t respond to it, it may be:
Internally failed
Burned out solenoid
Broken wiring / connector issue (could mimic regulator failure)