1. Relieve the high pressure fuel in the system by simply letting the engine cool down or wait five minutes. This will allow the fuel pressure regulator on the high pressure system side to bleed off and the fuel to cool. Disconnect the battery ground cable. For Injector removal and installation, refer to Service Manual for procedures.. Install the injection pump inlet hose to the fuel feed distribution (leak-off) block. 5. Position the injection pump inlet clamp. 6. Install the PCV hose to both valve covers. 7. Connect the oil.
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![[DIAGRAM] 66 Duramax Fuel System Diagram](https://1.bp.blogspot.com/-aSOoHNvvKmE/Vbu89x6kGGI/AAAAAAABQyY/_w5qu1NRczc/s1600/Duramax%2BCommon%2BRail%2BFuel%2BDiagram%2B.jpg "[DIAGRAM] 66 Duramax Fuel System Diagram")
[DIAGRAM] 66 Duramax Fuel System Diagram
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M. MIkey52. 2476 posts · Joined 2018. #2 · May 5, 2021. Your either bypassing to much fuel back to tank, or injector pump is bad. Start with fuel rail pressure regulator check. Or you could still have some air in the system. You should be 5-6000 psi while cranking.. Two Fuel Rail Pressure Regulators (FRPR) are used. FRPR1 is still located on the injection pump as on previous Duramax engines. FRPR2 is located on the front of the left fuel rail.. Correct there is no high pressure fprv on a lml/lgh. DIESELMAFIAPER.LB7 <----new hotness. Jan 17, 2010 5,163 12 38 idaho shop.dieselmafiaperformance.com. Nov 10.
