Five Tips In Diagnosing Problems With Your Common Rail Fuel Pump

Common rails are fuel systems that offer improvements to previous versions. These systems however still require continuous checks and maintenance. Owners need to become aware of how to diagnose...

Common rails are fuel systems that offer improvements to previous versions. These systems however still require continuous checks and maintenance. Owners need to become aware of how to diagnose and seek out assistance for repair of fuel pumps. The following are five tips to help you diagnose problems with common rail fuel pump.

Fuel Inlet Overpressure

Overpressure is one of the challenges of a common rail fuel pump. The issue occurs when fuel comes in and out of the engine and creates significant pressure. Without a proper monitoring tool, it can lead to potential damage to injectors, CP3 pump, and pop seals. As a solution, experts advise the use of a pressure gauge to determine the rate. Owners should also identify the recommended feed pressures according to engine types. For example, a Ford/Powerstroke requires a pressure of not lower than 8 PSI and not higher than 10 PSI.

Fuel Return Line Restriction

Part of the modifying common rail fuel pump involves restricting the fuel return line. While the change can lower pressure, the approach applies to specific types of engine. That is why it is crucial to stay away from such method because it can create problems to driveshaft seals and inspection plugs. The suitable approach to repair fuel pumps involves exploring providers with the necessary equipment to diagnose the problem.

Check for Condensation and Water Contamination

Condensation and water contamination are problematic issues that occur within a common rail fuel pump. Since diesel fuel absorbs water, it is essential to check your system for evidence of water consistently. The frequent exposure of the engine to temperature changes stimulate condensation. That is why experts advice to fill up the fuel tank if owners do not use the engine for more than 30 days. For extended storage, you can include additives that limit algae growth inside the container. If there is an issue, have a technician check and perform the repair for fuel pumps.

Change Fuel Filters

Fuel filters help protect the engine’s delicate components. That is why part of the maintenance process involves changing fuel filters within a specific schedule. When you consult with a technician for the repair of pumps and injectors, you can ask about the fuel filtration system and the required standards for replacement. The acceptable timeframe for changing fuel filters occurs after the second change of the oil filter. Moreover, you should also source only quality replacement to protect your engine.

Seek Professional Assistance

Consulting a professional is the viable route to assess issues with your common rail fuel pump. The advantage of contractors that specialise in the repair of pumps and injectors come from their knowledge of essential diagnostic equipment. Depending on the type of engine, these mechanics provide insights and help you identify potential issues. Moreover, you can ensure that an engine functions to its optimal condition.

The Bottom Line

Overall, the suggestions above detail some necessary checks that diesel engine owners can use. Identifying these issues assist you in determining solutions or provide preliminary information for technicians to address. If you struggle with these issues, the best approach continues to be sourcing qualified specialists to handle diagnostics and repair.

DTM Diesel & Petrol Injection Specialist specialise in the repair of pumps and injectors. With years of experience and training, repair of fuel pumps comes as second nature to our team. Contact us today for more info.

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