Toyota D-4S: Port Fuel Or Direct Fuel Injection? Why Not Both?
You may soon see a Toyota vehicle that has both direct fuel injection and port fuel injection. You will see port fuel injectors in the intake manifold and a direct injection fuel pump. Toyota calls this system the D-4S or Dynamic Force Engine and the earliest application was on the Lexus GS SUV with the V8. The D-4S system is not a “cold start” or “dousing” injector system, like that on V6 engines from the early to late 2000s.
Volkswagen, Audi Direct Fuel Injection System
For the past decade, almost every vehicle that Volkswagen and Audi has sold in the U.S. has been equipped with direct fuel injection. These FSI, TSI and GDI systems allow for better fuel economy and power. The switch to direct injection has also allowed Volkswagen to downsize its engines from 2.0L to 1.4L on base models without losing any power, while still improving fuel efficiency.
Diagnostic Solutions: Direct Fuel Injection Systems
For veteran technicians, it’s no wonder that the internal combustion engine (ICE) has been pronounced “dead” on more than one occasion. After having gone through the gas turbine craze during the early 1960s and the rotary engine fad of the 1970s, it comes as no surprise that we’re witnessing still another resurrection of the reciprocating internal combustion engine in the form of gasoline direct fuel injection.
VIDEO: Direct Injection Fuel Pump Killers
In this video, Andrew Markel covers how a fuel pump can fail. This video is sponsored by Carter.
BMW Extended Warranty On S63 Direct Injection High-Pressure Fuel Pumps
BMW has extended the warranty on the high-pressure fuel pump for the 2012 X5 M and X6 M models with the S63 engine. The warranty covers the pump for 10 years or 120,000 miles. BMW is not recalling the pump and no reason was given for the extension of the warranty.
Valvoline Launches Fuel System Service For Gasoline Direct-Injection Systems
This fuel system service removes carbon deposits from hard-to-reach intake valves, piston tops, cylinder heads and fuel injectors in gasoline direct injection (GDI) engines in just over one hour using basic tools, a simple canister apparatus and shop air.
Carbon Deposits and Direct Injection Engines
The primary cause of these problems is that fuel and added detergents are not hitting the back of the intake valves.
Today’s Fuel Pressure Diagnostics
Direct injection pressure is measured with sensors, and the signals are used to determine pump speed and/or volume.
Fuel Pumps and Cranking
Diagnosing the problem comes down to understanding what causes a loss of fuel pressure.
Gasoline Direct Injection Technology
Gasoline Direct Injection technology has been a key part of improving fuel economy and reducing emissions since the early 2000s. This video is sponsored by Standard.
