Duramax Diesels Forum Truck of the Week
  #1  
Old 10-16-2010, 04:02 PM
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Default Fuel leak

anyone ever have a ppe fuel rail inlet fitting leak ? The one that goes in place of the plug on the drivers rail . I tightend it pretty good and it still leaks when i rev the truck up.
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04 LB7 Denali conversion
626 h.p 1142 tq 5-8-2010 a5k, stock cp3
gt 4088r, gt4718 twins,
custom cam, 15.5:1 forged mahle w/ reliefs
ppe dual fuelers w/ lbz pumps 80% extrude hone inj
837 h.p. 1380 tq 5-14-11
11.40 @ 125.5
Thanks to Toman tysmith and Justind
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  #2  
Old 10-16-2010, 04:38 PM
cmitchell17@comcast.net cmitchell17@comcast.net is offline
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Are you talking about the FPVR or something else? Ive been having trouble with my LLY FPVR leaking internally and I found a ppe rail for cheap so I decided to just get a whole new ppe rail.
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  #3  
Old 10-16-2010, 11:41 PM
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What are you talking about exactly? I know a guy who has a PPE dual CP3 kit on his LBZ, and the fitting for the second CP3 goes into the back of the driver's side rail where the FPRV is normally installed. Is that what you are talking about? If so, yes. His was loose, and it leaked.
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  #4  
Old 10-17-2010, 02:37 AM
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Quote:
Originally Posted by xcablb7 View Post
anyone ever have a ppe fuel rail inlet fitting leak ? The one that goes in place of the plug on the drivers rail . I tightend it pretty good and it still leaks when i rev the truck up.


Did you leave the puck that was behind the plug out. If so thats your trouble you should of drilled it out to match the fitting that you got with the kit installed it then the fitting.
3. Remove plug from end of fuel rail with a TB50 Torx wrench or socket and install #7, Fuel Rail Fitting.
I
mportant: Early Model LB7 trucks may have a block off plate behind torx plug fitting, if so Remove this block off plate and drill out to same size as supplied fuel rail adapter fitting.

http://www.pacificp.com/pdf/Dual_Fueler_LB7_01-04.pdf
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  #5  
Old 10-17-2010, 02:37 AM
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Quote:
Originally Posted by JoshH View Post
What are you talking about exactly? I know a guy who has a PPE dual CP3 kit on his LBZ, and the fitting for the second CP3 goes into the back of the driver's side rail where the FPRV is normally installed. Is that what you are talking about? If so, yes. His was loose, and it leaked.

It feeds from the front of the rail on the LB7's Josh.
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Devil Girl 2006 2500HD LBZ Ex-Cab 4x4
EFI Live Shine,MPI twins intalled by BigDipper,PPE dual cp3,PPE lift pump,BigDipper 30% injectors, BigDipper Trans Precision ML converter.
Alot Of thanks To George aka BigDipper
11.53 @ 116.92 1.66 60's
RIP LBZ 6/1/08@5:44pm she was strong
She's Alive again
Born on July 27, 2008, 11:59:02 PM


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  #6  
Old 10-17-2010, 06:05 AM
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thanks henry i spaced out checking that because my truck is an early 04, but my spare motor that i used the rails from is an 01 i'll have to check that today
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04 LB7 Denali conversion
626 h.p 1142 tq 5-8-2010 a5k, stock cp3
gt 4088r, gt4718 twins,
custom cam, 15.5:1 forged mahle w/ reliefs
ppe dual fuelers w/ lbz pumps 80% extrude hone inj
837 h.p. 1380 tq 5-14-11
11.40 @ 125.5
Thanks to Toman tysmith and Justind
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  #7  
Old 10-17-2010, 07:52 AM
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that was it damb little plug was in there, why do 01's have to be difficult ? lol
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04 LB7 Denali conversion
626 h.p 1142 tq 5-8-2010 a5k, stock cp3
gt 4088r, gt4718 twins,
custom cam, 15.5:1 forged mahle w/ reliefs
ppe dual fuelers w/ lbz pumps 80% extrude hone inj
837 h.p. 1380 tq 5-14-11
11.40 @ 125.5
Thanks to Toman tysmith and Justind
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  #8  
Old 10-17-2010, 08:08 AM
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make sure the high pressure leak did not damage the threads
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  #9  
Old 10-17-2010, 09:58 AM
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seems to be ok thx,i'll keep an eye on it
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04 LB7 Denali conversion
626 h.p 1142 tq 5-8-2010 a5k, stock cp3
gt 4088r, gt4718 twins,
custom cam, 15.5:1 forged mahle w/ reliefs
ppe dual fuelers w/ lbz pumps 80% extrude hone inj
837 h.p. 1380 tq 5-14-11
11.40 @ 125.5
Thanks to Toman tysmith and Justind
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  #10  
Old 10-17-2010, 02:25 PM
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Quote:
Originally Posted by xcablb7 View Post
that was it damb little plug was in there, why do 01's have to be difficult ? lol

Did you drill it out to match and then replace it with the fitting?
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Devil Girl 2006 2500HD LBZ Ex-Cab 4x4
EFI Live Shine,MPI twins intalled by BigDipper,PPE dual cp3,PPE lift pump,BigDipper 30% injectors, BigDipper Trans Precision ML converter.
Alot Of thanks To George aka BigDipper
11.53 @ 116.92 1.66 60's
RIP LBZ 6/1/08@5:44pm she was strong
She's Alive again
Born on July 27, 2008, 11:59:02 PM


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  #11  
Old 10-17-2010, 02:41 PM
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yeah just like the instructions said, thx
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04 LB7 Denali conversion
626 h.p 1142 tq 5-8-2010 a5k, stock cp3
gt 4088r, gt4718 twins,
custom cam, 15.5:1 forged mahle w/ reliefs
ppe dual fuelers w/ lbz pumps 80% extrude hone inj
837 h.p. 1380 tq 5-14-11
11.40 @ 125.5
Thanks to Toman tysmith and Justind
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  #12  
Old 10-17-2010, 08:48 PM
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ripmf666 ripmf666 is offline
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Quote:
Originally Posted by xcablb7 View Post
yeah just like the instructions said, thx

Your welcome
__________________
Devil Girl 2006 2500HD LBZ Ex-Cab 4x4
EFI Live Shine,MPI twins intalled by BigDipper,PPE dual cp3,PPE lift pump,BigDipper 30% injectors, BigDipper Trans Precision ML converter.
Alot Of thanks To George aka BigDipper
11.53 @ 116.92 1.66 60's
RIP LBZ 6/1/08@5:44pm she was strong
She's Alive again
Born on July 27, 2008, 11:59:02 PM


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  #13  
Old 10-18-2010, 12:12 PM
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It's all set no leaks thx guys
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04 LB7 Denali conversion
626 h.p 1142 tq 5-8-2010 a5k, stock cp3
gt 4088r, gt4718 twins,
custom cam, 15.5:1 forged mahle w/ reliefs
ppe dual fuelers w/ lbz pumps 80% extrude hone inj
837 h.p. 1380 tq 5-14-11
11.40 @ 125.5
Thanks to Toman tysmith and Justind
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