So you plugged the standpipe hole with a dummy plug then plugged up the nipples somehow.
The leak was the same on all 4 injectors?
Was it coming from the top seal or the oil output ports on the top of the injectors?
What kind of PSI are you using?
You shouldn't be getting air coming out of the injectors.
Did you run any bad oil, or use a Napa or aftermarket oil filter cap for a while?

You may have stuck spool valves:
https://www.ford-trucks.com/forums/1...cs-inside.html

Give that a try

 

It funny you say that, just got out of the garage. I used my son to help me plug the 4 holes on the oil rail to test the nipple orings. They were rock solid with zero leaks at 150psi.

I then inserted one injector at a time to listen to each. All 4 of them had a very small faint leak at 150psi and I mean small.

Then I put all four in at the same time and the leak was about the same. Very small as compared to when it was all still in the engine.


I started doing some research on injector manufacturers and all stated that you would hear small amounts of air passing by. Got me thinking....who knows if the injector was closed or open when it was shut off.

Also I looked into the design of the stand pipe. It has a one way open valve in it. Oil can go into the rail fast, but when air testing from icp port the air is really restricted going through a small oriface in the valve.

So now I'm thinking the noise even with the ipr closes could be coming from either the other oil rail venting into the crankcase because the drivers side valve cover is still on, or the oring at the STC fitting is blown out, or the yellow one under pump? Or lastly I have a failure at the pump itself. Hoping not that.

What are your thoughts???

 

Ok guys 3 months ago I had a hot start issue, so I changed the dummy plugs, standpipes, stc fitting "it was already new style changed anyway", injector seals.

Put it back together and it still leaked. So I also changed the entire passenger side oil rail with a new one from ford. The drivers side I changed all the nipple cup orings, and replaced injector #1. When reassembled I didn't have anymore leaks.

Bringing me to 3 weeks ago, started to notice getting harder to start hot. Then just last week it quit all together starting accept if it was totally cold I'm the morning. Hot I could not get icp over 250 psi

Took it apart and did an air test, sounded like it was injector seals again so I changed all of the passenger side ones again, and even changed the factory nipple cup orings with new Viton ones to be safe. Reassembled and this below video is the result.


I used the bosetech ISK 102 injector seals. Never had problems with them. Has anyone had issues with them? I tested just the rail nipple cups and they held air just fine. I have all of it off now. Any better way to pressure test injectors by themself? The seals all look good and have no score marks at all they were just put in.
Here is the video of the seal and nipple cups.

 

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Proamas your problem is sounding real similar to the truck we are having problems with. We just finshed replacing all the injectors with oem remans from injectorsdirect.com hoping to finally fix the problem. We thought thats what we had it narrowed down to, leaky injectors. Well that didn't fix it. Truck still dies on us after it gets warmed up. Then its a hot no start.

So we have replaced all 8 injectors, nipple cup seals, stand pipe and dummy plug updates, and stc fitting update. Also tried a new ipr valve and a different hpop. Nothing fixes it! FICM also looks good going off the scan gauge it syncs good and has 49.5 volts.

This one won't even stay running tho. The ipr was at 84.5 when it was just acting up last time so I would think it has to be a high pressure oil leak? But where? It'll start losing power then as soon as you take your foot of the pedal when its acting up it will die. Hit it with some ether and it will start back up. Last time we were plowing it happened several times. Sometimes it would go for four hours, sometimes 5 mins before quitting again.

So its down again and now we are getting ready to bring it in and see if we can figure anything out with this autoenginuity software. Just got it. We'll keep you posted.

 

Well I had #5 at - 49 Contribution so i went and got it, look at what I found!!!

Still stumped as to how this happened and the copper washer was gone. Just put these in this January !!
<a href="http://s449.photobucket.com/user/Dlinzy993/media/IMAG0674_zpse035219d.jpg.html" target="_blank"><img src="http://i449.photobucket.com/albums/qq212/Dlinzy993/IMAG0674_zpse035219d.jpg" border="0" alt=" photo IMAG0674_zpse035219d.jpg"/></a>

Thoughts?

D

 

That my friend looks like pieces of a shop rag, or some kind of fabric contaminant.

 

I doubt if the copper washer just up and disappeared, it may have not been installed.

 

That Copper Washer BURNED UP

Looks like Soot on that Bottom 1/3 of the inject or until the Fuel rail Oring anyways

Surprised it didn't Hydro Lock

That Filter element contamination might have the fuel rail Plugged up Id check it Looks Nasty

Need to clean Both Fuel Rail thru the heads

Pull the Banjoes Apart at Heads see if getting plugged there

 

I've pulled all 8 injectors and it was only on this 1.

All washers were on the others.... baffling and only used OEM filters.

Can i blow out the fuel back thru the banjos and not remove the heads using compressed air?

And if it came thru the fuel it'd have to gone thru the nozzles correct?

Double checked washers all injectors were replaced with new from Warren Diesel.... less than a year ago

D

 

IDK what it is Cheezit suggested Filter in your other thread and to be Honest IDK what else it could be From

If it was fuel filter Media one would tend to believe other inject would show sign if that thread looking junk on Other Injectors and your saying its Limited to ONLY THAT INject so That a Good thing

One of a Kind thing Here

I wouldn't pull heads

Pull all injector out and Take banjo Off at front of each Head and Blow and Maybe push a Wire or something threw the Length of fuel Rail

 

See those Round Screen things on the Inject??? Right Inbetween those 2 Orings Midway up on injectors

Those 2 Middle orings Seals the Fuel rail in the Heads to the Injectors that's the Fuel Rail area

That's where the fuel goes in so I doubt it would make to the Nozzels

 

The lower o-ring was still in place albeit brittle. The "stuff" feels like cotton or a cloth like thread, definitely individual threads. Maybe it was a shop towel that hung on the injector. I sure hope so.

d