Plugging the LB7 FPRV

 
  #1  
Old 02-01-2009, 01:51 AM
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Default Plugging the LB7 FPRV

This is a mod to help out with having a leaky fuel rail. It can help stop the leak of fuel from a fprv that keeps on popping out on a low psi.

Tools needed:

10mm sockets and wrenches.
flex extension and magnet on a stick.
19mm wrench.
15mm socket wrench.
tap and dye set and 1/2 steel plug


Getting started:

Start off by taking off the intake and removing the belt on the truck.

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now go ahead and unbolt the ac compressor and lay it to the side.

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With the AC compressor out the way you can now get to the turbocharger intake horn bolts. It really helps out to have a flex extension, ratchet wrenches and magnet on a stick for removing these bolts.

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Last edited by 2500HeavyDuty; 02-01-2009 at 01:59 AM.
  #2  
Old 02-01-2009, 01:57 AM
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Default cont.

Now you are able to get a clear view of the 19mm bolt that you need to modify.

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When you get it out you can now go get it tapped and plugged. I used a 1/2 plug. it fits snug once u have it tapped. thanks to mr frydekcowboy for letting my use his shop to get the bolt tapped.

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Tap it just deep enough so that the plug will be flush with the end of the bolt. i used some red locktite on there so it would stay on.

reinstall the bolt and trq it down to 11ft-lbs.
 
  #3  
Old 02-01-2009, 02:44 AM
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Very Nice Danny !!
 
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Old 02-24-2009, 01:02 PM
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Who is that hansome guy in the red Truck Fx shirt on ? he looks pretty cool!!!!!!!!!!
 
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Old 06-24-2009, 10:44 PM
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Looks like something I should do while I am putting my SD horn on. Maybe it will cure my random rail pressure loss.
 
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Old 06-25-2009, 09:57 PM
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Originally Posted by uwyo_dmax
Looks like something I should do while I am putting my SD horn on. Maybe it will cure my random rail pressure loss.

might as well u can get a clear shot with the horn off, use red loktite on the plug.

turn down commanded psi to 24kpsi and slowly build up from there.... dont want to crack the bodies on the first week like somebody...
 
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Old 06-26-2009, 10:21 AM
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Originally Posted by 2500HeavyDuty
turn down commanded psi to 24kpsi and slowly build up from there.... dont want to crack the bodies on the first week like somebody...
so theres a chance of that?
 
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Old 06-26-2009, 04:55 PM
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well i was pushin over 26k.... they didnt like that
 
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Old 06-26-2009, 05:07 PM
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hmmm i try and run in that area also what do you think is a safe psi.
 
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Old 06-26-2009, 08:42 PM
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you can hold 24kpsi with w/e pw you were running set the max there for now ur truck is a monster the way it is with stock trans, you probably wont get more whit plugging it untill you get a modded regulator anyway
 

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