Simple Steps To Diagnostic Success In Fuel System Repairs

摘要

All too often,technicians experience comebacks and warranty returns on fuel system repairs due to problems that could have been easily avoided the first time around.Simple,yet effective practices in diagnostics and repair techniques can eliminate many of those needless returns,saving time,money and hassles.Here are a few. 1. Pressure and flow.Fuel delivery diagnostics should include the practice of an on-vehicle fuel pressure and flow test.A fuel delivery system must deliver fuel at the required system pressure and also at the proper flow level in order to be fully functional.The first step is to check fuel pressure,but a fuel pressure gauge alone should not be the sole diagnostic tool.To ensure power integrity to the system,electrical circuitry and ground supplies should also be checked.Problems in either area can result in low pressure,causing the pump to run slow.