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Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ, LMM & LML engine specific topics.

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Old 10-29-2012, 06:23 PM
chessy56 chessy56 is offline
Join Date: Jan 2006
Location: South Milwaukee, WI
Posts: 203
Cool Rubber fuel lines- LB7

'01 LB7:
A couple of years earlier, I replaced what I thought to be all of the rubber fuel lines on the top side of the engine. From the fuel feed pipe to the inlet of the injector controller module, from the inj controller module to the OEM filter, from the filter to what I've now found to be a "T" fitting. What I didn't know was that there are 2 additional hoses (I think) coming off of that "T"- one going to the injector HP pump (which was leaking) and one going to the fuel pressure test port. The dealership is telling me that there is another (longer) hose. Anyone know of where this other hose is or where it goes between? Is there a second hose coming from the injector pump or another off of that "T"? I just got hosed $300+ to have these 2 hoses changed! (At least I can run with my lift pump active again...)
So. Milwaukee, WI
'01 2500HD, LB7, 440K miles
"Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires

'17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!! Not excited about loan and insurance costs though...)

"Socialism is a philosophy of failure, the creed of ignorance and
the gospel of envy. Its inherent virtue is the equal sharing of misery."
Winston Churchill

Last edited by chessy56; 10-29-2012 at 06:26 PM. Reason: corrections
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