Some engines are more popular than others. For example, the pre-emissions Duramax engines made between 2001 and 2007 are highly sought-after for superior reliability. On the other hand, the more modern engines add more horsepower, torque, and upgrade capability with Duramax performance parts.
What is wrong with the LML Duramax?
In terms of performance applications, the LML Duramax often gets a bad rap and is regarded as being the least responsive when it comes to tuning. While there is some truth to that, the smaller turbo and lower volume CP4. 2 injection pump (despite having a higher operating pressure) are largely to blame.
Is the 6.6 LML Duramax a good engine?
Duramax Engines have an excellent reputation for reliability. Each model year is associated with problems, especially when the engines reach 100,000+ miles. However, while Cummins engines may continue to edge out Duramax in terms of overall reliability, Duramax fans love their higher horsepower.
What are common Duramax problems?
Most Common 6.6-liter Duramax Problems
- Issues With the Fuel Lift Pump. Duramax diesel engines use a direct injection fuel system.
- Water Pump Problems Are Common. Newer Duramax engines come equipped with water pumps that have plastic impellers.
- Duramax Engines Are Notorious For Fuel Injector Problems.
What is the best year for the Duramax diesel? – Related Questions
What year Duramax has head gasket problems?
These are both relatively common problems you might expect to deal with on the 2001-2004 LB7 Duramax, but you can rest a bit easier knowing the aftermarket has had a decade to develop and perfect the parts you need to correct it.
What years did Duramax have problems?
LML: 2011 – 2016
The power was increased for this year to almost 400 horsepower and 765 pound-feet of torque. To get this type of power without compromising emissions, GM had to increase the fuel system pressure. Unfortunately, this led to the injection pump becoming a ticking time bomb.
What years of Duramax to avoid?
The Duramax has a long history. We recommend avoiding any GM vehicle equipped with the 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, and 2010 Duramax engines. In short, the newer model years show improved performance.
Is 200 000 miles alot for a Duramax?
Even when used extensively for towing and hauling, Powerstroke, Cummins and Duramax diesel trucks typically last well beyond 100,000 miles. Because of that, it’s not uncommon to see diesel pickups with 200,000 and even 300,000 miles commanding good resale values on the used truck market.
How many miles will a Duramax 6.6 last?
Overall, a properly cared-for Duramax engine should last over 300,000 miles. However, consumers report having Duramax’s lasting in the 500,000-mile range!
What is considered high mileage for a Duramax?
According to Prosource Diesel, anything over 350,000-miles is considered high mileage for a used diesel pickup with a Cummins or Duramax engine under its hood. Anything over 350,000-miles is also regarded as high mileage for a Powerstroke diesel engine.
Should I delete my LML Duramax?
Additionally, the DPF system can clog, and so on. Outside of expensive repairs these emissions systems also create a lot of backpressure in the exhaust system which is bad for the turbocharger. For both preventative maintenance and performance reasons, deleting the Duramax LML DPF system is popular.
Which is better Duramax or Powerstroke?
Both the Ram’s Cummins (seen above) and Ford’s Power Stroke can pull over that amount, but the Duramax lags with a total towing capacity of 23,300. The Power Stroke wins here again with a total towing amount of 34,000 pounds versus Ram’s 31,210 pounds.
Should I buy a diesel truck as a daily driver?
Is a diesel truck good for a daily driver?: Diesel trucks make great daily drivers, especially if you have easy access to diesel fuel nearby and are looking for a truck that’s torquier than its gas counterparts.
What is the longest lasting diesel truck?
Most Reliable Diesel Pickups of All Time
|
Model |
Engine |
| Ford |
F-250/F-350 |
7.3-Liter Power Stroke V-8 |
| Chevy/GMC |
Silverado/Sierra |
6.6-Liter Duramax LB7 V-8 |
| Chevy/GMC |
Silverado/Sierra |
6.6-Liter Duramax LBZ V-8 |
| Dodge Ram |
2500/3500 |
5.9-Liter, 12-Valve Cummins I-6 |
1 more row
Do diesel trucks cost more to insure?
No matter what type of vehicle you purchase, insurance costs are based on the value of the vehicle. So, a higher-priced vehicle will be more to insure than a lower-priced vehicle. Because diesel trucks cost more to produce than standard gas trucks, diesel truck insurance is usually around 10-15% more than a gas truck.
Are diesels better for long distance?
Better for longer journeys and towing
Diesels deliver more power at lower engine revs than their petrol equivalent. This makes diesels feel more suited to longer motorway trips because they’re not working as hard as petrol engines to produce the same performance.
What are 3 disadvantages of diesel engines?
Cons of diesel cars
Diesel fuel usually costs more. Servicing can be more expensive, although you don’t need to do it as often. Diesel cars produce a lot more NO2. Diesel engines can be slightly noisier.
At what speed is a diesel engine most efficient?
Between 1,300 and 1,500 RPM is the most fuel-efficient engine speed, or what some would call the “sweet spot.”
How long can a diesel car sit without being driven?
Storing petrol and diesel
Stored diesel should be OK for up to a year.
Does idling a diesel hurt it?
Unnecessary idling wastes fuel, causes air pollution and increases engine wear. An idling diesel engine produces much higher emissions than it would while using the same amount of fuel under load. Extended idling causes a build-up of soot inside the engine and results in a puff of black smoke when the engine revs.