Engine/Transmission (1998.5 - 2002) Return line banjo bolt

[RBeard]

Is the return line banjo bolt also a pressure relief valve. Where I'm going with this is my pressure guage is connected to the fuel inlet line on the IP and I wonder what regulates fuel pressure that I see on my guage. I usually have 13-15 psi at idle and lately it has been 11-12. I also had a pressure problem last week where it would start at 12 psi and 30 secs later it would drop to 4 psi and you could hear the LP change to a higher pitch like it was cavitating,checked all from tank to IP and found no problem.

 

[JPulliam]

As far as I know the banjo fitting does not have a pressure regulater in it.

 

[pfmoale]

R. B. ,

There is some type of ball inside the return banjo bolt fitting. It is also a different diameter size than the supply side. Larger, I believe.

Don't know if they get tired, or what the deal is.

I would imagine you could purchase a direct replacement if needed.

How many miles on your rig ?



I just did an injection pump and lift pump change out. Bought my I. P. from Blue chip diesel. Curt Fisher really knows those VP44's.



If I have to someday buy another I. P. , it will be through his company !



Be sure you have a good lift pump. Installed the DDRP unit from FASS. It delivers 2 liters in a 25 second "Tick of the key".



Good Luck,



Peter