How To Change Injector O Rings On 7.3 Powerstroke

I park my trailer and shut off the motor to finish unloading it. I go to restart the motor and I was met with an extended creepo when hot. I thought that possibly the IPR o-rings were damaged. I continued to drive my truck for the week. When cold, the motor started instantly merely when hot, in that location was an extended crank. Equally fourth dimension progressed, so the motor would have an extended creepo when cold but it would start. When the motor started, it ran fine....no smoke, full ability.

Until two days ago, the motor would not starting time. ICP pressure would get up to 400 range and get no further. So I had a set of IPR o-rings and decided to change them. I pull out the IPR, everything was fine. So I changed the o-rings anyway. Try to start the motor...aught; no ICP over 400. I was able to get-go the motor by shooting it with ether. Yea I know, I don't similar it either.

I bring information technology by my diesel mechanic buddy. He isolates the HPOP from the heads and installed a transmission gauge. With the banks isolated, the driver side was building no force per unit area and the passenger side was edifice over 1500 ICP.

So nosotros accept the commuter side valve cover off. He plumbs and air source into the HPOP plumbing equipment on the head. To make up one's mind which injector, he pressurizes the rails with shop air. Find that #2 injector was leaking. Nosotros pull that injector and discover this:

I was expecting that the meridian o-ring was gone. I show him the injector and he says that all of the orings he replaces, they are cut in the same area by the metallic ring departing line. I start removing the o-rings and he tells me not to remove the metal ring. He started doubling upwards on the metal rings to give a tighter fit. The metal ring gaps are prepare 180* apart. He also stated that he is finding with college mileage motors, that a groove is developing in the injector bore resulting in cutting orings. My injector bores were fine.

And so I replace the orings and put the injector back in. Re-pressurize the HPOP track and observe that #8 is now leaking. I pull #viii out and notice that the tiptop orings are also cut. Since 50% of the orings were replaced on the commuter side banking company, I pull out the rest of the injectors. Oh yea, I had reservations at Ruth's Chris with the gf for her birthday and she kept calling if I was going to make it. I pull #2 and #6 and observe this:

#four

I effort to figure out why things fail and await for a cure if possible. What bothers me is why the square oring which is by the metal ring, gets cut. With all three rings installed, there is play. With the double metal rings, at that place is no play and the injector has a tighter fit.

I installed the injectors this past December. The truck is not raced, information technology'due south just daily driver/tow vehicle. With both top orings cut, I had no show on the ScanGauge (reading ICP and ICP%) that the orings were cut.

I am going to replace the passenger side for good measure this coming calendar week. The orings I used are from International.

I know that orings get bad but is this going to exist a common trouble? This NO reflection on the injector builder or tuner.

I had to movement the reservation ane hour subsequently which she didn't accept an issue with. She was happy in the end; that's what mattered the most.

Thoughts/discuss?

Baton T.
[email protected]

Source: https://www.powerstrokearmy.com/threads/is-there-a-better-injector-o-ring-fix.55804/

Posted by: romerobeatee.blogspot.com