Fuel Pressure Relief Valve Removal questions - Chevy and GMC Duramax Diesel Forum
04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

 
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post #1 of 7 (permalink) Old 03-10-2012, 01:27 PM Thread Starter
 
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Fuel Pressure Relief Valve Removal questions

I recently bought a shim kit for my fuel pressure relief valve. Truck is an 04 lly. The instructions from PPE show a way different glow plug controller than what I have and I can't seem to find any other directions showing how to remove the bracket to actually get to the valve. Anyone else have this issue? How do you get a wrench to the 2 bolts under the bracket?

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post #2 of 7 (permalink) Old 03-10-2012, 01:39 PM
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I used a stubby 12 mm ratcheting wrench to get to mine.

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post #3 of 7 (permalink) Old 03-10-2012, 02:10 PM
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just tried to do mine yesterday had to cut a 12mm wrench in half thats all i had butt cant get the valve out

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post #4 of 7 (permalink) Old 03-10-2012, 08:18 PM
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A stubby wrench will get the GP bracket off, but those 2 bolts are a major PITA to get to.

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post #5 of 7 (permalink) Old 03-10-2012, 10:21 PM Thread Starter
 
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Truck is all back together. Doing the actual shim part is a breeze compared to the fight of getting those two bolts out. Ended up using an offset short wrench. Thanks for all the feedback!

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post #6 of 7 (permalink) Old 02-14-2013, 09:51 AM
 
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Do you have to bleed off the fuel system before removing the valve or will it bleed off as you loosen the valve?
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post #7 of 7 (permalink) Old 02-14-2013, 09:55 AM
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Quote:
Originally Posted by Cseaton View Post
Do you have to bleed off the fuel system before removing the valve or will it bleed off as you loosen the valve?

As long as it has been sitting an hour or two, there shouldn't be any pressure behind it at all.

2005 Silverado EC/SB, LLY, 4WD, EFI DSP5 V2 (Idaho Rob at ATP), Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w/ Suncoast Filterlock and Transynd ATF, Bilstein 5100's (Norcal), Cognito UCA's, 17" NBS alloy rims, 265/70R17 Michelin LTX M/S2's, Pioneer AVH-P3200BT, CubbyCam Backup Camera, Pop & Lock Power Tailgate Lock, Extang Solid Fold Tonneau Cover, Tekonsha P3 Brake controller, Alphatherm AT-38OD Washer Fluid Heater
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