What are the symptoms of a bad high pressure fuel pump on an Audi A4?
Symptoms of a Bad High-Pressure Fuel Pump on an Audi A4 The main symptoms of a bad high-pressure fuel pump on an Audi A4 include rough idle, hard starting, loss of power under acceleration, engine misfires, check-engine lights with fuel or misfire codes, and sometimes fuel smell or metal debris in the fuel system; these …
