What problems do the LLY Duramax have?
The most common issues LLY owners encounter include decreased fuel mileage, overheating and poor turbo response. These symptoms result from the inlet mouthpiece of the Garrett turbocharger having to fit into a smaller engine space.
Is the lly a good Duramax engine?
LLY: 2004.5 – 2006 The LLY is capable of getting the largest amount of additional horsepower from tuning only versus any other Duramax engine except the most recent model in the L5P. In terms of weaknesses, the LLY traded the injector issues for overheating issues related to heavy-towing and blown head gaskets.
How many miles are LLY Duramax good for?
The Duramax engine should last up to 300,000 miles before needing major repairs if you are wondering how long it will last.
Is the 6.6 LLY Duramax reliable?
Under the moniker “LLY” is the 2nd version of Duramax. LLY Duramax is an upgrade to an LB7 diesel truck. It is reliable, powerful, and does not exceed many of the emissions of modern L5P diesel trucks. There is no common injector failure issue among LLY Duramax trucks compared with LB7 trucks.
What’s better LLY or LB7?
Between the 3 LB7s I have a work and my LLY, the LB7 seems to be more ‘sluggish’, a bit less power and louder, BUT seem to be more of a consistant increase in power through the RPMs. My LLY, is much quieter and smoother. The power is dormant right off idle until the turbo spools, then it takes off like a rocket.
Does LLY Duramax have EGR?
yes lly has the egr, but blocking it is no problem.
What’s better LLY or LBZ?
there are no difference from the lly to lbz engine wise and transmission wise its exactly the same, the ecm has the tune of a 05 lly with 310hp and not the lbz which is 350hp throw a tuner on there and its not gonna matter.
Is 200 000 miles alot for a Duramax?
Is 200 000 Miles Alot For A Duramax? The trucks Powerstroke, Cummins, and Duramax typically last well over 100,000 miles and are commonly used mostly for towing and hauling. These factors make diesel pickups that have 200,000 miles or even 300,000 more expensive to trade in.
How long will an LB7 last?
300,000 miles
As we said earlier, the LB7 powered HD Sierras and Silverado’s are very reliable, and many you’ll find on the market have well over 300,000 miles on the original engine.
What year was the LLY Duramax?
The 6.6 liter LLY Duramax V8 engine was introduced during the 2004 model year as a replacement to the LB7 Duramax V8. As such, it powered Chevrolet Silverado Heavy-Duty and GMC Sierra Heavy-Duty pickup trucks through 2006, making up to 310 horsepower and 605 pound-feet of torque.
Why is LBZ better than lly?
However, the LBZ generated 360 horsepower over the LLY’s 310 horsepower. Torque increased as well, going from 605 pound-feet with the LLY to 650 with the LBZ. The LBZ employed a thicker engine block casting, meatier connecting rods, and a higher pressure common-rail fuel system.
Is the LB7 or LLY better?
The LB7 was the simplest in terms of emissions controls, while the LLY came with the largest turbocharger ever offered. The LBZ packed a host of improvements, including considerably more power, and the LMM was nearly a mirror image of it aside from its use of a diesel particulate filter.
Are there any problems with the LLY Duramax Turbo?
Unfortunately while this turbocharger provides significant air-flow, the LLY Duramax has several components that are extremely restrictive, resulting in problems because of it. The main restriction is the turbo air inlet manifold.
Does the LLY Duramax have EGR problems?
The LLY Duramax doesn’t suffer the same widespread EGR problems like the 6.0L Powerstroke. GM 04.5-05 LLY Duramax EGR Valve : GM 97303761 or ACDelco 2142109. Photo taken from Amazon website. 7. Glow Plug Failure LLY Duramax Glow Plug failure is a common problem amongst late model year trucks.
What are the restrictions on a Duramax Turbo?
The main restriction is the turbo air inlet manifold. The LLY Duramax turbo air inlet manifold, sometimes called the turbo mouthpiece, forces the turbocharger to work harder than it needs to. It does this by essentially choking the turbo because of its small, restrictive design, forcing it to work harder to produce the same amount of boost.
Why is my Duramax not producing power?
Over time, from constantly being subjected to extreme pressure, the spring can weaken, causing it to being releasing rail pressure earlier than it should. The end result is rail pressure continually dropping slowly over time which will make your Duramax create less and less power.