What Makes Diesel Injectors Fail?

What happens if a diesel injector fails?

Over time, diesel fuel injectors wear out and fail to close completely.

When this happens they cause a leak-down, resulting in a reduction of fuel pressure across the fuel rail.

This can cause a difficult- or no-start condition as well as a smokey exhaust..

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.

Can a bad diesel fuel injector damage the engine?

Left unchecked, faulty fuel injectors can damage an engine enough to keep the car from running, but there’s usually time to intercept and fix the problem. … Detonation is harmless in some cases, but the pressure has potential to break engine components and cause pitting and scuffing around the pistons.

What happens when one injector fails?

A faulty fuel injector may cause a rough engine idle if it fails to deliver a steady, constant stream of flow to a vehicle’s engine. A dysfunctional fuel injector may inject too much or too little fuel into an engine’s cylinders. Both scenarios can cause a rough engine idle.

Can diesel injectors be tested?

Mechanical Injector Testing and Rebuilding Similar to gas and common rail injectors, mechanical diesel fuel injector service begins with a test. However, unlike gas injectors, we can take apart the mechanical ones, allowing for a thorough internal investigation.

How often should diesel injectors be cleaned?

You should do a deep cleaning of the diesel injector at least once a year or after every 30,000 miles. However, it depends on the age of your vehicle, your driving conditions, and the type of fuel you use. Your vehicle owner’s manual may give you the recommended clean-up period for your fuel injector.

How do I know if my diesel injectors are bad?

5 COMMON SYMPTOMS OF FAULTY DIESEL FUEL INJECTORSTrouble starting the vehicle or uneven idling. The engine cranks but doesn’t start unless you crank it for a long time. … Misfire. … Smell of fuel. … Dirty emissions. … Increased fuel consumption and poor miles per gallon.

How long should diesel injectors last?

around 150,000 kilometresDiesel 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.

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!

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. This is why it is often best to replace multiple injectors at once. …

How much does it cost to replace an 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.