Direct Fuel Injection Archives - UnderhoodService
High Pressure And High Maintenance

Direct fuel injectors can take a lot of pressure. This video is sponsored by Rislone.

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.

7 Reasons Direct-Injection High-Pressure Fuel Pumps Fail

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

Holley EFI Expands Terminator X And Terminator X Max LS Lineup

Now available are Terminator X systems for LS1 engines with EV6, LS2/LS3s systems for late-model trucks, and Terminator X Max systems for numerous drive-by-wire/multi-point-fuel-injection applications with electronic transmission control.

Direct Fuel Injection Diagnostics

Direct injection is becoming standard on more and more late-model vehicles. These systems can be a diagnostic challenge but, with the right foundation, problems can be solved profitably.

GM Tech Tip: Black Smoke And Rough Idle On Cold Start

The driver will complain that during a cold start black smoke will come from the exhaust and the engine will have a rough idle and minimal misfires. With the introduction of direct fuel injection systems, GM has revised the cold start control system to reduce cold start emissions. Quicker catalytic converter heating helps meet the ever-changing emission requirements and improve fuel economy.

The Oil And Carbon Deposit Connection

Oil is made of carbon atoms. The oil in the crankcase is a highly refined carbon-based substance that is found in long chains with strong bonds that are typically uniform in size and shape. They work well together to lubricate the engine and protect the bearings, as they are engineered to withstand extreme temperatures.

Oil And Direct Fuel Injection

The oil in the crankcase of a direct fuel injected engine can make a huge difference in the health of the engine. The right oil can reduce carbon deposits on the intake valves and keep the engine healthy.

direct fuel injection oil featured
Solving Carbon Deposits In Direct Fuel Injection Engines

There are several fixes available to solve carbon buildup problems. The first is preventive maintenance. Scheduled oil changes can keep the camshaft actuators working in optimal condition to control the exposure of the intake valves.

Ford EcoBoost Engine direct injection
The Best Tests For Fuel Delivery Systems

The ancient Greek philosopher Heraclitus said that there is nothing permanent except change. Greek history aside, it’s easy to spot change in our current market because vehicle fuel delivery technology has evolved to ­include conventional, pulse-modulated and direct fuel injection fuel delivery systems, with each having a specific set of components and testing issues. In

Testing Fuel Delivery Systems