LB7: truck down over a year still need help Please

[RPierson51]

So its been over a year now and i still cant get this thing going ugh where to start... so last april #1 injector shorted to ground shutting off injectors 1,4,6&7 swapped it out and ran fine for a week then #7 injector shorted, shut off the 4 same injectors. tested the ficm harness seemed good, changed #3,5,&7 injectors at this point since i had the passenger side open again, got it back together and ran good for only two days this time, then #6 injector shorted, same thing shut off #1,4,6&7. At this point i was told i can just change the solenoids instead of the whole injector so i bought 4 brand new solenoids for the driver's side from accurate diesel and from what i read the solenoid swap seemed simple just un screw the old ones and screw on the new ones so i did and re attached everything and went to start it which it did not and a lot of fuel came shooting out the exhaust, after posting a separate thread about that incident i was told it sound like an injector is sticking open causing the raw diesel shooting out the exhaust so it seemed i installed the solenoids incorrectly, an individual who replied to my post said i possibly lost a spring off an injector while installing the solenoids or something got stuck in there or something so i just checked the 4 drivers side ones and each one has a spring and no debris stuck in there or anything, is there something i failed to do installing the solenoids? And as i was dis assembling today i broke a terminal off one injector i guess i had it too tight is there a torque spec for that? And on top of all that i still cant find out why the injector solenoids are shorting in the first place, truck has been to the dealer as well as two "diesel specific" repair shops and no one cand find the cause just charge me for labor and say its fixed. before all this the injectors were replaced by dealer 4 years/60k miles ago with zero issues until this originally happened about a year ago, any ideas on this at all would be greatly appreciated thanks in advance.

 

[c20elephant]

So its been over a year now and i still cant get this thing going ugh where to start...

so last april #1 injector shorted to ground shutting off injectors 1,4,6&7 swapped it out and ran fine for a week then #7 injector shorted, shut off the 4 same injectors.

tested the ficm harness seemed good, changed #3,5,&7 injectors at this point since i had the passenger side open again, got it back together and ran good for only two days this time, then #6 injector shorted, same thing shut off #1,4,6&7.

At this point i was told i can just change the solenoids instead of the whole injector so i bought 4 brand new solenoids for the driver's side from accurate diesel and from what i read the solenoid swap seemed simple just un screw the old ones and screw on the new ones so i did and re attached everything and went to start it which it did not and a lot of fuel came shooting out the exhaust,

after posting a separate thread about that incident i was told it sound like an injector is sticking open causing the raw diesel shooting out the exhaust so it seemed i installed the solenoids incorrectly,

an individual who replied to my post said i possibly lost a spring off an injector while installing the solenoids or something got stuck in there or something so i just checked the 4 drivers side ones and each one has a spring and no debris stuck in there or anything, is there something i failed to do installing the solenoids?

And as i was dis assembling today i broke a terminal off one injector i guess i had it too tight is there a torque spec for that? And on top of all that i still cant find out why the injector solenoids are shorting in the first place, truck has been to the dealer as well as two "diesel specific" repair shops and no one cand find the cause just charge me for labor and say its fixed.

before all this the injectors were replaced by dealer 4 years/60k miles ago with zero issues until this originally happened about a year ago, any ideas on this at all would be greatly appreciated thanks in advance.

Got damn, when will people understand that punctuation maybe even paragraphs HELPS immensely for others to understand W-T-F you're writing about..

Rant done and I fixed it the best I could..

 

[Max Attitude]

Yeah I literally gave up and moved on. Punctuation is in your best interest. :thumb:

 

[DAVe3283]

OK, so it sounds like one by one you are having injectors short to ground. That is unusual, IMO. I've never heard of that happening before.

Given how much time and effort has already been put into this truck, the next time the valve covers come off, I would put new injector harnesses in, even if the old ones look fine. I would also ohm out the harness between the valve cover plugs and the FICM while wiggling it around to make sure nothing is shorting.

I have never heard of just replacing the solenoids on the injectors, but I have also never heard of a solenoid shorting to ground before. What brand injectors were in the motor? It sounds to me like most/all your problems are from junk injectors.

I know they are expensive, but paying the extra for real Bosch reman units from a reputable store is worth every penny.

If you don't mind tearing into it again and again (or paying for someone to do it for you), then you could pull the leaking injectors and have them sent to a shop to be fixed. If it were me, I would pull all 8 injectors out, and put new Bosch remans in, and be done with it. It would cost a lot (not as much as going under the valve covers 4 times...), but it would be the last time you have to mess with them for a long time.

 

[TheBac]

F-i-c-m