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Common Problems Of Cummins Diesel Engines | Mevert Automotive & Tire Center Inc. in Steeleville, IL. Closeup image of the exhaust of a diesel car. Concept image of emissions problem seen in some vehicle running with Cummins engine.As with any engine, whether gas or diesel, the Cummins has some common problems. Some are minor and some, like head gaskets are major. Mevert Automotive & Tire Center in Steeleville IL provides repair for 6.7 Cummins problems and 5.9 Cummins problems. When you need diesel engine repair, make an appointment with one of our certified auto technicians and we’ll get you back on the road as soon as possible.

Common problems with Cummins engines include:

Diesel Particulate Filter (DPF) Clogs

The DPF filters on the earlier 6.7 Cummins engines are well-known for clogging. Chrysler tried to avoid using diesel exhaust fluid (DEF). DEF converts nitrous oxides in the exhaust stream, so the air-to-fuel ratio doesn’t have to be as rich. Without the DEF, the mixture had to be richer, which caused particulates to build up on the filter. In 2011, RAM Trucks introduced SCR emissions, which requires DEF, for it’s chassis cab truck and in 2013 for pickup trucks. Thus, the newer Cummins engines do not have as much of a problem with the DPF filter clogging.

Maintenance Practices for Diesel Trucks | Mevert Automotive & Tire Center in Steeleville, IL. Closeup image of Cummins diesel engine. Concept image for diesel truck maintenance.Fuel Dilution

The Cummins normally has some fuel dilution. However, you should never let it get past about 5 percent, as you’ll start seeing problems. The best way to avoid this issue is to have a regular oil analysis to determine fuel dilution in the oil. Once we determine how long it takes for it to get close to 5 percent, we can create an oil change schedule to ensue you change the oil prior to problems.

This is particularly true if you idle the truck a lot. Excessive idling significantly contributes to fuel dilution, as do running the truck cold. Mevert Automotvie & Tire Center can help you prevent issues by creating an oil change schedule for the truck. For more information, give us a call at (618) 965-9609.

Head Gasket Failure

While head gasket failure is less common on the 5.9 Cummins, it is more common on the 6.7 Cummins. The larger engine has a higher cylinder pressure to give you more torque. It’s always been true that high horsepower and torque are not synonymous with reliability and the 6.7 Cummins proves that theory true.

Mevert Automotive & Tire Center in Steeleville IL provides diesel engine repair, including head gasket replacement.

Turbocharger Failure

6.7L Cummins Turbocharger Failures

Another common issue with the 6.7 Cummins is that turbocharger failure is quite common. The earlier version of the engine are more likely to have issues than the newer engines. Many shops will replace the whole turbocharger, which results in a large repair bill.

Mevert Automotive & Tire in Steeleville IL can repair turbochargers, including the oil seals, compressor wheels, turbine wheels, stuck VGT mechanisms, work bearings, and electronic failures.

Contact Mevert Automotive & Tire Center

If you have problems with your diesel engine and need cummins diesel repair, contact Mevert Automotive & Tire in Steeleville IL by calling (618) 965-9609. If you cannot drive your vehicle to us, have a tow truck drop it off. We are conveniently located at 1014 West Broadway, Steeleville IL 62288.