What Problems Do LBZ Duramax Have?

Is the Duramax a good engine?

The 6.6L Duramax has been in production since 2001 and has proved, on a large scale, to be a relatively reliable and durable platform.

While various versions of the engine have surfaced over the years, all generations of the Duramax are based on the same foundation..

What’s better LBZ or lb7?

The LB7 – stronger internals, injector issues, and 5 speed trans. The LLY – stronger internals, headgasket/overheating issues, but no injector issues, and 5 speed trans. The LBZ – weaker internals (pistons are weaker), but no injector/overheating/headgasket issues. Also get the 6 speed.

Are Duramax engines made by Isuzu?

The 6.6-liter Duramax is produced by DMAX, a joint venture between GM and Isuzu in Moraine, Ohio. …

Is Cummins or Duramax better?

About Duramax Engines Their high horsepower and torque outputs directly compete with Cummins engines, as well as PowerStroke. In addition to durability, Duramax engines are known for their quiet performance. The Duramax LP5 in particular is 38% quieter than previous versions.

How reliable is the LMM Duramax?

Duramax LMM Reliability Consistent to its very similar LBZ counterpart, the LMM is a highly reliable engine.

What is high mileage for a Duramax?

What is high mileage for a Duramax diesel? It depends. The truth is, there is no single mileage that is considered to be “too high”. Some Duramax owners claim that 100,000 miles marks a heavily-used engine, while others refuse to consider anything below 350,000 miles to be high mileage.

How long should I let my Duramax warm up?

Warm Up RecommendationsAmbient TemperatureAcceptable Warm Up Period< 0° Fup to 7 minutes0° F - 50° F3 to 5 minutes> 50° F1 to 2 minutes

What is the best oil for a Duramax?

Our Best Oil for Duramax ReviewsShell Rotella T6 Synthetic 5W-40 Diesel Engine Oil. … Liqui Moly Synthoil Premium 5W-40 Synthetic Motor Oil. … Shell Rotella T4 Triple Protection Conventional Engine Oil. … Valvoline Premium 5W-40 Oil, Full Synthetic Engine. … Delo XLE 400 Synthetic Blend Oil, 15W40. … Mobil Delvac 1300 Engine Oil.More items…•

What is so special about the LBZ Duramax?

This engine’s beefier block casting, stronger connecting rods, higher pressure common-rail fuel system and updated ECM arguably made it the most powerful, drivable, reliable and tunable Duramax to date. Right out of the box, the LBZ produced 360hp and 650 lb-ft of torque.

How many miles will a LBZ Duramax last?

Registered. A stock truck should get 350,000-500,000 miles without major engine repair.

What is the best year of Duramax?

The 2001 – 2004 model years are great on fuel, have the least emissions components, and shouldn’t give you any problems if the injectors were replaced under warranty. Avoid the 2007.5 – 2010 model year trucks if you are concerned with fuel economy.

What is the best tuner for a LBZ Duramax?

Best Diesel Tuners for 6.6L DuramaxBully Dog 40420 – Best Diesel Tuner for 6.6 Duramax.Edge Products 85400 Diesel Tuner for 6.6 Duramax.DiabloSport 8245 Diesel Tuner for 6.6 Duramax.DiabloSport 7202 Diesel Tuner for 6.6 Duramax.Hypertech 32501 Diesel Tuner for 6.6 Duramax.More items…

Is 200k miles alot for a diesel?

High Mileage Generally speaking, diesel trucks are sold with higher mileage than the typical used vehicle. It is not uncommon to see a used diesel truck for sale with over 200,000 miles on it. Granted, diesel engines typically have better reliability than a gasoline equivalent, but high mileage remains a concern.

What is the most reliable Duramax engine?

Best Diesel Engine – 10 Most Reliable Units on the Market6.6L Duramax LB7 – Overall Best Diesel Engine. … 6.7L Power Stroke – Best Ford Diesel Engine. … 7.3L Power Stroke – Best Powerstroke Engine. … 6.6L Duramax LP5 – Best Year Duramax Diesel Engine. … Chrysler 3.0L EcoDiesel – Best Small Diesel Engine. … 6.6l Duramax LBZ.More items…

Whats better Duramax PowerStroke or Cummins?

While the 6.7L Cummins and the 6.7L Power Stroke share the same displacement, the 6.6L Duramax is a pretty close match. … Horsepower and torque numbers are similar between the three diesel engines, but the Cummins engine leads the pack with its torque rating breaching the four-figure threshold.

Is LBZ the best Duramax?

The LBZ was a short-lived Duramax V-8 engine produced only from 2006–2007. The LBZ brought with it a substantial increase in HP and torque over the LLY and was easily the most aggressive Duramax engine yet made. … However, it was ultimately replaced by emissions-compliant engines such as the LLM (see below).

How much does it cost to service a Duramax?

Chevrolet Silverado 2500 HD auto repair and maintenance costs. The estimated cost to maintain and repair a Chevrolet Silverado 2500 HD ranges from $80 to $8305, with an average of $270.

Why does my Duramax surge at idle?

Most likely it is the fuel pressure regulator valve that is in the CP3 that is the culprit. The LB7 model was prone to spring failures and would cause this rapid fluctuation fuel pressure which results in the idle lope. It’s a pretty common issue actually for the LB7.