European Auto Service

Peterson Dynamics Automotive

Fuel Injector Testing And Troubleshooting

When dealing with fuel injector problems on a BMW or Audi, it is important to diagnose them before replacing them without thorough diagnostics. The first step is to review the vehicle’s service history to see if the injectors have ever been serviced or replaced. If so, then it may be possible to rule out injector-related issues. Additionally, it is important to pay attention to any other symptoms the vehicle may be exhibiting that could be related to a fuel injector issue such as a decrease in fuel economy, rough idling, or misfiring.

The next step is to perform a visual inspection of the fuel injectors. This should include an examination of the fuel lines and connectors, as well as the injector itself. If the injector is found to be clogged, cracked, or otherwise damaged, then it should be replaced. Additionally, it is important to inspect the fuel filter to ensure it is clean, as a clogged filter can cause fuel injector problems.

Finally, it is important to perform a detailed diagnostic test on the vehicle’s engine computer. This can help to identify any electrical issues that may be causing fuel injector problems. Additionally, a professional scan tool can be used to test the injectors.

Need Index 12 injectors for your BMW? Maybe a P0300 random misfire code and you don’t know where to go next? Give us a call and we will offer up our best solutions!

BMW GDI Fuel Injector