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What year did Duramax have injector Problems?

What year did Duramax have injector Problems?

2001
What year Duramax has injector problems? The LB7 Duramax built from 2001 – 2004.5 is known for injector failure.

How do I know if my injector is bad LB7?

There is a multitude of symptoms your truck will experience if the injectors are going bad. One of the first signs we see are excessive smoke/haze. You will notice your truck billowing out a little more smoke than usual or hazing at idle. Another issue you may notice is high EGTs.

What is the best year of Duramax to buy?

Any generation duramax will pull a 3 horse trailer handily. They all have their own quirks and issues that can be resolved, and once they are, you’ve got a reliable, strong truck for many miles. Most will say the 06-07 LBZ model to be the most desirable and reliable platform.

Does a 2004 Duramax have a fuel pump in the tank?

The GMC and Chevy Duramax pick-up trucks do NOT have a lift pump to supply fuel to the engine. From the factory, the CP3 injection pump is the truck’s only means of getting fuel from the tank to the engine.

What year Duramax has head gasket problems?

In the GM world, the 2004.5-2005 LLY engine seems to be the worst for having gasket failures. These years seem to have temperature issues and I believe it’s because of this, that we see these trucks more than any other Duramax for head gasket issues.

How many miles will a 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.

How do you diagnose a bad injector on a Duramax?

Symptoms of Failing Duramax Fuel Injectors

  1. Excessive Smoke.
  2. Power Loss.
  3. Rough Idle.
  4. Fuel in Oil.
  5. High Return Fuel.
  6. No Start.

How many miles will a LB7 Duramax last?

Miscellaneous Parts. 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 is the most reliable Duramax engine?

Released in 2017, the L5P is the latest a greatest version of the Duramax. It is substantially more durable than previous Duramax models and features an impressive 445 HP and 910 lb-ft of torque. The L5P replaced the LML in Chevy Silverado pickup trucks.

Do lift pumps add horsepower?

For diesels, lift pumps are the unsung heroes of their respective performance world. In addition to making big horsepower a reality, they add reliability to the entire fuel system, yield improved filtration over stock and (if electric) offer infinite adjustability over fuel pressure.

How do you test a fuel pump on a Duramax?

High Pressure Testing (LB7 Example) Start by first stroking the hand pump. If the hand pump is soft and then becomes hard, recheck cranking fuel rail pressure. If pressure is now okay, you have a fuel supply issue. Testing the high side with a supply side fault will definitely lead to an incorrect diagnosis.