Fuel Injector Failure Diagnostics


Major reasons for the fuel injector failure are Fuel Contamination and Poor Fuel Filtration.

Repair statistics show that the majority of diesel engine problems stem from contaminated fuel. One of the most common problems with diesel injectors is corrosion, which is caused by water in the fuel. How does the water get into the fuel? A vented cap allows air to enter the storage tank to equalize pressure as the fuel flows out. The outside air contains moisture and this moisture condenses into water inside the tank. Always purchase fuel from a reputable service provider and use a proper fuel/ water separator.

A common problem with diesel injectors today is ball seat erosion. The heart of the common rail injector is the magnetic valve through which fuel passes at extremely high pressure. The passage opening is sealed using a small ball that is only 1mm in size. A proper seal is critical for proper injector performance. Abrasive contaminants can erode and damage the ball seat causing the ball not to seal properly, leading to improper injection.

Quality comes first at Majestic Turbo of Dallas. Each injector component is tested visually, mechanically, and electronically as applicable and replaced with OE components if needed. Each injector is tested as per manufacturer spec for operational accuracy.

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