Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello I will help you with your question,
You will just replace the diaphragm if it is leaking,
NOTE: To prevent leaks, the pressure regulator diaphragm assembly must be replaced whenever the cover is removed.WARNING: The pressure regulator contains a large spring under heavy compression. Use care when removing the screws to prevent personal injury. REMOVAL:
INSPECTION: Inspect the pressure regulator seat in the fuel meter body cavity for pitting, nicks, or irregularities. (Use a magnifying glass if necessary.) If any of the above is present, the whole fuel body casting must be replaced.INSTALLATION:
This information is for the 2.5L engine the others are similar. If you need specific info and you do not have the 2.5L please post the engine size
Let me know if you have additional questions
thank you George
1- Inspection- replacing the whole fuel body casting? Would that be the pressure regulator cover, spring seat and spring? Or the entire fuel meter cover assembly containing a new pressure regulator?
2-Installation#4-Installing four screws to pressure regulator cover coat with appropriate locking compound? Medium strength- loctite blue OK? High Strength-loctite red OK? Which One? Is the loctite brand ok?
3-I have the 2.8 litre motor is the procedure the same?
Hello, Your reply did not show up in the list of my questions so I am sorry for not replying sooner.
Your 2.8L is serviced differently than the 2.5L. If you are replacing the regulator due to bleedoff after the pump is shutoff be aware that there is a bleed orifice that will allow pressure to reduce after the pump is turned off and this is normal operation.
With that being said your diaphragm is serviced with the fuel meter cover and the regulator is included in the cover
The pressure regulator is a diaphragm-operated relief valve with system operating pressure on one side and and atmospheric pressure on the other side. The function of the regulator is to maintain a constant pressure to the injectors at all times, by controlling the flow in the return line by means of a calibrated bypass.NOTE: The pressure regulator on this unit is serviced as part of the fuel meter cover and should not be disassembled.
To service the cover
NOTE: The fuel meter cover assembly contains the fuel pressure regulator assembly. The regulator has been adjusted at the factory and should only be serviced as a complete assembly.WARNING: DO NOT remove the four screws securing the pressure regulator to the fuel meter cover. The fuel pressure regulator includes a large spring under heavy compression which, if accidently released, could cause personal injury. Disassembly might also be result in a fuel leak between the diaphragm and the regulator container. REMOVAL:
The thread locker is blue locktite
Sorry for the delay