DIY Duramax Fuel Fix—Rebuilding A Leaky Fuel Filter Head A common problem with high-mileage 2001-2010 Duramax trucks is that the fuel filter head assembly begins to develop air leaks. The engine’s CP3 high-pressure fuel pump is capable of drawing fuel from the tank without the aid of an external lift pump as long as the system remains primed. fuel filter housing leak | Chevy and GMC Duramax Diesel Forum ok i got a leak on the top of the fuel filter housing around the rubber peice that the wiring harness plugs into. Is there a fix for this or do i need a new housing? 2002 Chevy 2500HD Crew Cab 4x4 LB7 Duramax. Edge Juice with Attitude. 285/75-16 Falken All-Terrains.Fuel Filter Housing Electrical Connection?Fuel Filter Housing Leak?Fuel Filter Housing?? Issue??See more results LB7 6.6 Duramax Common Issues, Problems, and Fixes GMC and Chevy Duramax LB7 6.6 Diesel Common Issues and Problems. Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank. nine times out of ten the issues are in the fuel filter head. Duramax fuel filter housing leak - yeetoutproject duramax fuel filter housing leak, Jul 03, 1997 · Fuel filter drain valve o-rings for the fuel filter housing of your 7 powerstroke Alliant Power Fuel Filter Drain Valve Kit For 1994-1997 7 Powerstroke COVID-19 Update: We are OPEN , Shipping daily! Fuel leaking out the top of the filter housing. | Diesel I started looking in all the usual spots around injectors and return lines and so no sign of fuel in those areas. After I made it home and could look further, I finally found an area that was greasy looking on the top of the fuel filter housing. It seems to be leaking out of the electrical plug on top of the housing. Commons 6 Duramax Problems & Concerns It can also be relatively difficult to prime the fuel system once air has been introduced into the system, such as when the fuel filter is changed. The 2001 to 2004 LB7 fuel filter housings seem to be the most prone to problems. Water Pump Failure. Water pump failures for Duramax The 5 Most Common LB7 Duramax Engine Problems - 6 V8 As part of the fueling system you have a fuel filter and filter head which filters fuel before the fuel is sent through the lines to the injectors. On the LB7, the fuel lines are occasionally known for leaking. However, the majority of LB7 fuel leaks are caused by the filter housing. The head of the housing uses multiples o-rings to seal the pump.
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