Blue Spring Upgrade Issues?

[campbell3736]

Just wanted to ask.....

Has anyone experianced any issues with the FPR blue spring upgrade?

I had one installed when I had my #4 injector replaced and my pressure is all over the map I will have 40-50 one min and 0 another then to 30 and so on I just put a used pump that was pushing correct PSI before and truck will run great for a period of time then stumble and die. wait a few min and fire right up run for a bit and stumble and die. I am lost at this point and can only point to the upgrade any thoughts?

2004 F250 6.0 Stock 117500 miles

[Vip]

Similar issues with mine, here's a link to my thread... figure anything out?

Low fuel pressure after BB and new HFCM

[fixxxer-upper]

On my 04, I had to reuse a sealing ring from the old parts that fit with the black poppet to make it fit snugly in the housing. The blue spring upgrade kit did not have this plastic ring. From what I have been reading, it seems there may be some differences on this part is installed in the 03-early 04. Once I installed it the second time, the fuel was up to 62 psi at KOEO.

[2006PSDSD]

No issues with mine in the 6k miles I've had it. Mine's an 06 though

[dieselflash]

sounds like you may have an injector letting compresion into the fuel system,how long does it run before it starts losing pressure and dies

[BDSford03]

I have an earlier 04 and had to reuse the black poppit as well. No issue for me though.

[campbell3736]

Turned out the so called mech that replaced #4 injector left a peice of washer or something in the injector cup which held out the injector enough to let exhaust pass through.

Going back to the old frame of mind that I will be the only one under the hood

[BDSford03]

Originally Posted by campbell3736

Turned out the so called mech that replaced #4 injector left a peice of washer or something in the injector cup which held out the injector enough to let exhaust pass through.

Going back to the old frame of mind that I will be the only one under the hood

Built not Bought!

[Vip]

Originally Posted by fixxxer-upper

On my 04, I had to reuse a sealing ring from the old parts that fit with the black poppet to make it fit snugly in the housing. The blue spring upgrade kit did not have this plastic ring. From what I have been reading, it seems there may be some differences on this part is installed in the 03-early 04. Once I installed it the second time, the fuel was up to 62 psi at KOEO.

I had a mechanic do the upgrade - if he didn't reuse the sealing ring, any ideas how I could source that piece? I'm sure the old parts were thrown away.

[dieselflash]

Originally Posted by dieselflash

sounds like you may have an injector letting compresion into the fuel system,how long does it run before it starts losing pressure and dies

I work after a lot of so called mechanics too, they don't know what a torque wrench is,especially on injectors