Question: How Long Do Diesel Injectors Last?

How do you fix a diesel injector knock?

When you run diesel purge through your engine most of these noises will disappear within ten to fifteen minutes.

The lubricant in the purge will reduce the “nailing” or hammering in the injectors and the clean fuel will reduce the combustion knocking sound..

What is the best year for Duramax?

2006-2007 2500 & 3500 With arguably the best plug-and-play horsepower potential (on top of 360 horsepower being offered right out of the box), the last of the (essentially*) emissions-free engines, and a stronger, six-speed Allison to back them, the LBZ Duramax has a lot going for it.

How can I test my diesel injectors at home?

Start your car’s engine. Take your metal rod or screwdriver and place it on a fuel injector. Carefully lean your head close enough to the rod so that you can hear its vibrations, but not so close that you are near the engine. If the injectors are activating, you should be able to hear a clicking sound.

What year Duramax has injector problems?

2001 to 2004Premature injector failure was a critical problem for the 2001 to 2004 model year Duramax LB7. GM corrected the problem with an updated injector design and even extended the warranty on the new injector design to 7 years/200,000 miles.

Can you drive with a bad injector?

Though you can still drive or run your car even after noticing some signs of bad fuel injectors problems, it is not advisable for you to overlook any of these bad injector symptoms. The reason is that it could get serious and cause more problems that can damage your car engine.

How long do Duramax injectors last?

Most well-maintained LLY injectors last between 150,000 to 200,000 miles.

What does a bad diesel injector sound like?

A bad injector can sound exactly like a rod knock. One that completly fails and squirts all it’s fuel all at once will scare the daylights out of you it’s so loud. You’ll think it’s going to crack the block!

How often should diesel injectors be replaced?

Diesel fuel injectors generally have a shorter lifespan than their predecessors, meaning they need to be replaced more frequently for optimal performance. The life expectancy of a good quality diesel fuel injector is around 150,000 kilometres. They should be checked out by a professional at around this time.

How much does it cost to replace a fuel injector?

Depending on the make and model of your car, the average fuel injector replacement cost will run you about $800 to $1,450 for a full replacement. If you have the knowledge to do the replacement yourself, the parts alone are around $600 to $1200, while the labor cost is only about $200 to $250.

Is it better to clean or replace fuel injectors?

We recommend cleaning fuel injectors at least every 36 months or 45,000 miles. … Many engine parts can be replaced without noticeable improvement in performance, but when dirty injectors are cleaned there can be a distinct before-and-after difference!

How can you tell if you got a bad injector?

Here are a few signs there might be something wrong with your fuel injectors.The Engine Misfires. Dirty fuel injectors may cause your vehicle’s engine to misfire. … Idling Gets Rough. … Your Gas Mileage Tanks. … The RPM Needle Starts to Dance. … Your Car Won’t Start.

How do I know if my diesel injectors are bad?

A few signs that your injector is going bad include:Poor engine performance or misfires.A check engine light comes on.Hard starting or poor idle – especially after the vehicle has been sitting overnight.Black smoke from tailpipes.Foul odor from tailpipes.You notice a decrease in fuel efficiency.

How many miles do fuel injectors last?

100,000 milesThe fuel injectors on your car will typically last between 50,000 and 100,000 miles. The length of time that the injector lasts has a lot to do with the type of gas that is used in the car and how often the various fuel filters are changed.

Is it bad to run a diesel with a bad injector?

Left too long, a faulty fuel injector can cause serious engine damage that requires major repair. Avoid the cost and hassle by using Rislone Gasoline Fuel System Treatment or Diesel Fuel System Treatment every 3,000 to 5,000 miles, depending on the type of driving you do.

What makes diesel injectors fail?

Diesel injectors fail because of two main reasons. … Without a flush surface to seal against, the injector will not shut off, and piston damage is usually the result. Aggressive tuning and debris in the fuel is usually the culprit. All these examples are from actual injectors Exergy Engineering took in to test.

Can you replace one diesel injector?

When it comes to your diesel fuel injection system, a single injector is often the cause of an entire engine failure. … Often, one little problem in your diesel engine may be indicative of other system failures. This is why it is often best to replace multiple injectors at once.

What happens when diesel fuel injectors go bad?

Like anything else, injectors can get tired and become weak over time. Even though they are electronic, sometimes the mechanical components inside the injector may also become worn, cease to function properly and even fail. … One of the most common failures occurs when an injector body becomes cracked.

Why do diesels knock?

Knocking is more or less unavoidable in diesel engines, where fuel is injected into highly compressed air towards the end of the compression stroke. … This sudden increase in pressure and temperature causes the distinctive diesel ‘knock’ or ‘clatter’, some of which must be allowed for in the engine design.

How much does it cost to replace injectors on a 6.6 Duramax?

The total cost to have a mechanic replace 8 injectors on an LLY Duramax can range from $3500 – $4500 CAD, depending on what other work is performed at the same time. The good news is LLY injectors are located outside the valve covers so the task is considerably easier and cheaper than on prior LB7 models.