Some Common Problems with Diesel Engines

Diesel engines come in a number of vehicle makes and models. There are common problems with diesel engines.Diesel engines are very durable machines, but there are some common problems that users regularly report. By knowing what to look for, you can keep a close eye on your diesel engine and keep it running properly for years to come.

If you have any other problems that aren’t listed here, call GM Exclusive Auto Repair or stop in! (760) 941-5002

Common Problems

Some problems include loose throttle linkage or dirty fuel filters,both of which would cause problems with low power. Gaskets or connections can leak oil, causing you to have to replace oil more frequently. Oil can oxidize if it is allowed to sit in an inactive engine for too long, so it is always recommended that diesel engine owners regularly change their oil.


Electrical equipment, including relays, and switch terminals, can often corrode and become inoperative. Electronic controls can leak or malfunction and should also be checked on a regular basis.


Overheating is a common problem, and is often due to a failure of the fan clutch, which prevents the fan from providing adequate airflow to keep the engine cool. If your radiator is dirty or clogged, it may also contribute to the problem. Grime that builds up over time may reduce the heat exchanger’s efficacy.

Water Pump

Water pump failure is another common problem, and can also cause your engine to overheat. This seems to be a problem inherent with the design of the factory water pump, and a replacement may be necessary.