Fuel Pump Diagnostics Archives - Tomorrows Technician
High-Pressure GDI Fuel Pumps

When solving a fuel pump issue, the scan tool is your best friend.

7 Reasons Direct-Injection High-Pressure Fuel Pumps Fail

High-pressure fuel pumps can malfunction and/or fail due to a number of factors.

VIDEO: Internal Fuel Pump Leaks

If the fuel pump is replaced, any filter or screen should be inspected and replaced. This video is sponsored by Carter.

Fuel Pump Codes And Control: Keeping Pressure In The Zone

The first electric fuel pump circuits were very simple. The pump circuit usually involved a relay and fuse. The control side to the relay was typically wired to an ignition circuit or key switch. The control of the fuel pressure was performed with an analog regulator that could keep a static pressure and adjust for loads with a vacuum signal.