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Duramax First Generation: 2001-2004 (LB7) Discuss the first generation (2001-2004 LB7) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.


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Old 05-16-2019, 08:20 PM   #1 (permalink)
DaviesDurmax
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Fuel pump?

So I went to the dealership today and long story short I was told this part isn't stock. Linked picture. I believe it is a belt driven fuel pump but not sure? Can get more pictures if needed. Thanks

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Old Today, 01:46 AM   #2 (permalink)
axysassault
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Redneck lift pump! I like it haha.


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Old Today, 02:17 AM   #3 (permalink)
Rvn4me
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Itís a a second belt driven CP3 pump. The Dual Fueler pump and factory pump work in conjunction.
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Old Today, 02:36 AM   #4 (permalink)
DaviesDurmax
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So better or worse then a Fass lift pump?
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2001 GMC DURAMAX 2500 4x4
ATS Turbo
5'' stainless turbo-back exhaust
K&N CAI w/ air scoop
Mossner fuel pump
Bilistien shocks
Firestone airbags in back
PPE hot +2 E.T.
Built Allison Transmission
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Old Today, 06:22 PM   #5 (permalink)
Rvn4me
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Quote:
Originally Posted by DaviesDurmax View Post
So better or worse then a Fass lift pump?
Kennedy diesel lift pump seems to be the choice on here.
Lift pump is not required with a duel fueler however for optimum flow to both CP3’s and to reduce fuel filter restriction it is recommended.
You do know the difference between fuel pump & lift pump functions?
What you have pictured is a second injection fuel pump. Looks like a homemade concoction not like the PPE’s Dual Fueler kit or ATS TWIN CP3
I suspect you don’t have stock injectors.
There thousands of threads like this that might help
https://www.dieselplace.com/forum/3-...ift-pumps.html

Last edited by Rvn4me; Today at 06:45 PM.
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Old Today, 09:28 PM   #6 (permalink)
blkdmax05
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Based on the aftermarket parts shown in that photo, the dealership isn’t going to be able to help a ton. You’d be best at a diesel shop.
Do you have a problem your trying to solve?
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