Auto Fuel Systems

More Flow

Fuel Pumps and Cranking

Diagnosing the problem comes down to understanding what causes a loss of fuel pressure.

Acura High-Pressure Fuel Pump 

Follow the correct repair procedures for a high-pressure fuel pump that is making a chirp.

Fuel Systems – Direct Injection

The configuration of any GDI system will vary according to age and application.

Curing Intermittent And Chronic Fuel Pump Failures

The fuel pump may be one of the most misdiagnosed components on a vehicle.

Ethanol & Fuel Systems

Here’s what you need to know about ethanol and E15 fuels.

High-Pressure GDI Fuel Pumps

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

Fuel Tank Contamination

A number of things can cause a fuel filter to plug up.

Oxygen Sensors And Catalyst Efficiency

Newer air/fuel ratio or wide-band sensors can detect a wide range of fuel conditions.

Gasoline Direct Injection Is Better, But Not Perfect

GDI technology has improved but drivers could face problems if they don’t keep up with maintenance.

Fuel Pressure Diagnostic Service

Use a scan tool that can look at special direct fuel injection parameters and perform bidirectional tests.

Fuel Tanks and Pumps

The behavior of the fuel wells, pumps & sending units are often misdiagnosed, leading to fuel pumps being replaced.

Drivability Issues Fuel Trim Diagnostics

No code diagnostics are some of the most challenging drivability issues.