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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.
Replaced fuel filter housing. Now lots of problems | Chevy
Dec 24, 2016It's a 2003 Chevy 2500 HD with the 6.6 duramax. It broke down on me, the dealership said that it was sucking air through the fuel filter housing. They replaced the fuel filter, the whole housing, and the two fuel lines. I believe the filter housing they put on Fuel Line Issues | Chevy and GMC Duramax Diesel ForumAug 30, 2014Fuel lines collapsing | Chevy and GMC Duramax Diesel ForumAug 19, 2014Fuel Filter Housing Cracked | Chevy and GMC Duramax DieselJul 06, 2011fuel filter housing leak | Chevy and GMC Duramax Diesel ForumJan 12, 2011See more resultsPeople also askWhat are the problems with Duramax fuel pump?What are the problems with Duramax fuel pump?One of the most common problems with this design that 6 Duramax fuel pump repair experts point out is that, over time, a crack tends to develop in the fuel filter. Another common issue occurs when air is drawn in due to bad housing.Duramax 6 Turbo Diesel Repair Experts Point out CommonSee all results for this questionIs there a fuel leak on a Duramax?Is there a fuel leak on a Duramax?External fuel leaks can develop as well, and will be evidenced by fuel puddles on the ground or on top of the filter assembly. If you have a high-mileage Duramax-powered truck and suspect that it’s losing its prime, or you have seen evidence of fuel leaks from the filter head, you’ll want to address the problem as soon as possible.DIY Duramax Fuel Fix—Rebuilding A Leaky Fuel Filter HeadSee all results for this questionDoes Duramax Diesel have a lift pump?Does Duramax Diesel have a lift pump?The Duramax diesel is susceptible to fuel starvation and getting air in the fuel lines. This can be contributed to the fuel filter housing design and the fact that the Duramax does not use a lift pump.Commons 6 Duramax Problems & ConcernsSee all results for this questionWhat are the problems with Duramax injectors?What are the problems with Duramax injectors?The new injectors available from us and others are updated and do not have the cracking issue. 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. The injection pump sucks all the fuel from the tank.LB7 6.6 Duramax Common Issues, Problems, and FixesSee all results for this questionFeedback
Duramax 6 Turbo Diesel Repair Experts Point out Common
The design of the filter housing is the cause, as Duramax does not utilize a pump. Instead, the engine operates by vacuuming the fuel from a tank with the help of an injection pump. One of the most common problems with this design that 6 Duramax fuel pump repair experts point out is that, over time, a crack tends to develop in the fuel filter. Another common issue occurs when air is drawn in due to
Issues with Fuel Filter Housing Leaking After Installing
May 18, 2018Ever since I installed the FASS setup on my truck (2003 Chevy Duramax) back in 2012, I have had problems with the stock fuel filter housing leaking. I have tried replacing the seals on the original housing a few times and then recently I ordered a whole new one with the hopes of keeping it from leaking, but it is still doing it.Fuel Filter Clogged UpSep 19, 2017fuel leak on supply line by fuel coolerSep 21, 201407 duramax bad fuel filter housing?? | Diesel PlaceJun 08, 2014Fuel leak from top of filter headSep 26, 2010See more results
Commons 6 Duramax Problems & Concerns
The 2001 to 2004 LB7 fuel filter housings seem to be the most prone to problems. Water Pump Failure. Water pump failures for Duramax engine are somewhat common. It is not unlikely that a water pump will need to be replaced in the 80,000 - 100,000 mile range. This seems to be inherent of the factory water pump design. Overheating. Overheating issues with the Duramax diesel seems to be
LB7 6.6 Duramax Common Issues, Problems, and Fixes
Fuel Filter Housing Oring Leaks – . The Duramax fuel system does not have any sort of low pressure fuel pump pushing.. Glow Plug System Issues – . Nearly half of the check engine lights that come in for the Duramax pickups are for glow.. Head Gaskets – . As these truck reach the 100,000-150,000
OEM NEW 6 Duramax Diesel Fuel Filter Housing 05-12
This is the exact factory replacement in my 2005 Duramax. After a couple of starting issues, I found that my fuel filter housing had a small air leak allowing fuel to drain back into the tank when not running took about an hour to replace and solved the issue helps to have some small hose clamps to replace the factory duel hose clamps.Reviews: 56
Duramax LMM fuel filter problem! | The largest community
Dec 23, 2008I have a 2500HD with a Duramax LMM (new body style). Just had the fuel filter changed two weeks ago and the truck went into limp mode say "reduced power". Had to have the fuel filter changed again. Dealer says it was clogged up. Dealer also says that he has had a lot of the same trucks in for the same thing.exhaust manifold leak on 2001 F350 7.3 dieselAug 10, 2014Duramax fuel filter issuesNov 26, 2010Ford 7 diesel problemNov 04, 2009Duramax low oil pressure??Dec 12, 2008See more results
The 5 Most Common LB7 Duramax Engine Problems - 6 V8
Aug 05, 2020The 5 Most Common LB7 Duramax Engine Problems. Fuel Injector Failure; Water Pump Failure; Fuel Filter Housing O-ring Leaks; Blown Head Gasket; Overheating (fan clutch problems, radiator gunk) In addition to the above common engine problems, there are also a few worthwhile to mention problems that affect high horsepower LB7’s:
Tech Tip: GM Duramax Diesel Fuel Filter Replacement Problems
Nov 24, 2020The following tip applies to all 2001-'06 General Motors trucks equipped with the 6 Duramax Diesel engine, RPO LB7 or LLY. There are a couple of issues with the fuel filters on these vehicles. GM has released a revised fuel filter; see TSB 04-06-04-070. The new filter is longer than the original filters used and has a plastic housing.
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