Opel 2.2 Direct fuel pressure regulator EAF

New fuel pressure regulator Opel/Vauxhall 2.2 Direct for from F5R Team. If your engine turns off after warming up or goes into limp mode at idle, it is mostly caused by defect of the fuel pressure regulator. 

Replacement for GM 24404015, GM 95507060, GM 55575441

The regulator F5R Team (UE116112EAF) has been manufactured from the highest quality materials ensuring long term trouble-free operation.

The valve of the regulator is made of tungsten carbide, three times harder than original steel valve (>92HRC).

The spare small o-ring is added to the regulator

Fuel pressure regulators may come in different colors depending on the current PVD process.

This version EAF of the regulator has been produced at the request of some costumers who wanted tungsten carbide valve and also filter at the inlet.

Installed regulator

Fuel pressure reading

PWM of the regulator reading

Frequently asked questions and answers:

- do the F5R regulators fit the Z22YH engine? YES, they are produce for this engine and they fit

- will the EAF come into the fuel rail because it is a few millimeters longer than the original? YES, 1 cm of space remains under the regulator

- if the service on the dashboard lights up, do I need to replace the regulator? NO, it is first necessary to determine the causes of the fault

- if I have fault P1191 do I have to replace the regulator? NO, first check the year of manufacture of the regulator, it is the last 2 digits in the third row, in most cases you should replace regulators older than 2011, and necessary older than 2009

- if the regulator is from 2011 or newer, do I have to replace it? NO, such regulators can only cause only one symptom, the service light up at idle, if we keep revolutions e.g. 1500-2000 rpm, the light will not on

- do I need to replace the regulator if the service lights up when idling and not while driving? YES, the regulator valve is likely to wear, but other causes must be ruled out beforehand, e.g. low pressure in the lift ump or damaged regulator O-rings

- can the regulator damage the pump? YES, the regulator can permanently overload the pump, which leads to its damage, but only in the case of regulators manufactured before 2009 (up to date 246 09). To be sure, use the regulators from the second service action, i.e. from 2011. Fully functional pumps should not be damaged even in the event of complete failure of the regulator because the pump has a safety valve

- should there be a filter in the regulator or not (EAF or EA)? It is in the description, the regulator is mounted on the outlet of the injection rail, all filters should be mounted before the injection system. In other words, it is like putting an air filter on the exhaust pipe, if someone wants to have such a filter then it is possible

- why do diaphragm breaks in GM pumps? because they are old and worn. In addition, the pump design is not completely thought out, for pressures above 100 bar no one uses diaphragm pumps but piston pumps

Installation instructions

🔥Any work on the injection system may only be carried out on a cold engine 🔥

Before pressing the pressure regulator into the rail, dip the regulator head in engine oil. The pressure regulator must click into the seat under finger pressure. This is a condition for the correct positioning of the O-rings and the tightness of the system.

Adaptation procedure
After starting the engine, leave it at idle speed until the radiator fan turns on. While warming up, increase the engine speed from time to time. Wait until the fan turns off and turn off the engine.
In case of problems, it is necessary to connect the diagnostic device and check working parameters. If the pressure drops under load, the high pressure pump should be checked.

Due to the high pressure, the injection system can only be leaked when the engine is cold. The installation of parts must be in full accordance with the manufacturer's service procedure. We are not responsible for unprofessional installation.

- where to get new original diaphragms? you should buy a new pump, take it apart and we will have new diaphragms. There is no other option