Are 2002 Duramax a good engine?

Outside of a number of common problems which are mostly resolved today, the LB7 Duramax is a stout engine with good reliability and performance for its age. While the engine isn’t necessarily built to be tuned to produce massive amounts of power, it does a great job of being a solid stock work truck.

What are the problems with 2002 6.6 L Duramax?

This can lead to more serious problems, as diesel fuel doesn’t offer the same lubrication properties as oil. You’ll also experience loss of power, excessive smoke, rough idling, and engine misfiring.

What year is the best Duramax diesel?

The Duramax L5P, the current model first released in the 2017 model year, easily takes the crown as the best Duramax engine yet produced.

What years did Duramax have problems?

Duramax 6.6L Content

• LB7 Common Problems (2001-2004)
• LLY Common Problems (2004-2006)
• LBZ Common Problems (2006-2007)
• LMM Common Problems (2007.5-2010)
• LML Common Problems (2011-2016)
• LBZ Upgraded Intake Guide.

How many miles will a 2002 Duramax last?

A poorly-maintained engine can quickly fall into disrepair before it even reaches the 100,000-mile mark while a well-maintained Duramax pickup truck should last 400,000 or even 500,000 miles.

What is wrong with Duramax engine?

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. Rather, the high pressure fuel pump (injection pump) is responsible for vacuuming fuel from the tank.

How many miles will a LMM Duramax last?

GM has given the engine a 95% rating at 200,000 miles, meaning 95% of all engines should reach 200,000 miles of service, based on durability and wear. With careful and routine service – and a mindful driver, I’d expect many more miles than is indicated by GM’s conservative rating.

What year Duramax has injector problems?

What year Duramax has injector problems? The LB7 Duramax built from 2001 – 2004.5 is known for injector failure. The good news is the replacement injectors you purchase from us incorporate several updates to help prevent repeat failures.

How many miles will a 2003 Duramax last?

Are there any problems with the Duramax engine LLY?

Duramax Engine LLY 2004.5 to 2005 In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.

What are the common problems with 6.6L Duramax?

9 Common 6.6L LB7 Duramax Problems. 1 1. LB7 Duramax Injectors. The most notorious LB7 Duramax problem is their original injectors. Even GM acknowledged their problems when they corrected 2 2. Lack Of A Fuel Lift Pump. 3 3. Fuel Filter Housing O-Ring Leaks. 4 4. Water Pump Failures. 5 5. Overheating.

Are there any problems with the Duramax water pump?

This seems to be inherent of the factory water pump design. Overheating issues with the Duramax diesel seems to be a hit-or-miss problem; some owners experience it, while others never will. Regardless, it’s more common with the Duramax than other engines.

What was the problem with the LBZ Duramax in 2006?

Glow plug failure was a concern on the 2006 model year LBZ and LLY Duramax models, but the problem should have been long corrected for owners of these years. The concern was that the glow plug module would over cycle the glow plugs, creating a scenario in which the tip of the glow plug could actually deform and/or break off in the engine.