What can cause a Cummins injector to fail?

What can cause a Cummins injector to fail?

In cases such as these, the scan tool generally will pinpoint the cylinder with the contribution problem. However, injectors can fail in different ways, other than becoming just worn out or tired. One of the most common failures occurs when an injector body becomes cracked.

What to do if your Cummins engine is not running?

The best way to rule it out is to check if the fuel tank is sufficiently filled, then make sure the pump is delivering fuel and run diagnostics on the actual pressure. Insufficient fuel supply: The engine needs a sufficient supply of fuel to run correctly.

What does black smoke mean on a Cummins Engine?

Black smoke means you need to check for: Faulty fuel injectors: If your engine has faulty injectors, they can cause a return flow or drop in fuel pressure, which alters the amount of fuel reaching the engine. Faulty injector pump: Pumps affect the fuel pressure and injectors directly, and a faulty pump can do a lot of expensive damage.

How can I isolate a cylinder in a Cummins Engine?

The only way that you can isolate an individual cylinder is to cut off the supply of fuel – in order to do this in a common-rail system you’ll have to cap it off. For the Cummins engine, I start with the first cylinder and remove the hard line between the fuel rail and injector.

In cases such as these, the scan tool generally will pinpoint the cylinder with the contribution problem. However, injectors can fail in different ways, other than becoming just worn out or tired. One of the most common failures occurs when an injector body becomes cracked.

The best way to rule it out is to check if the fuel tank is sufficiently filled, then make sure the pump is delivering fuel and run diagnostics on the actual pressure. Insufficient fuel supply: The engine needs a sufficient supply of fuel to run correctly.

Black smoke means you need to check for: Faulty fuel injectors: If your engine has faulty injectors, they can cause a return flow or drop in fuel pressure, which alters the amount of fuel reaching the engine. Faulty injector pump: Pumps affect the fuel pressure and injectors directly, and a faulty pump can do a lot of expensive damage.

The only way that you can isolate an individual cylinder is to cut off the supply of fuel – in order to do this in a common-rail system you’ll have to cap it off. For the Cummins engine, I start with the first cylinder and remove the hard line between the fuel rail and injector.