Solving Carbon Deposits In Direct Fuel Injection Engines
When the early direct-injection engines hit the three-year or 30,000-mile mark, some developed driveablity problems due to carbon buildup on the necks of the intake valves.
Automotive Fuel Pumps Continue To Evolve
On most applications, the pump runs at a constant speed (typically 3,000 to 7,000 RPM depending on the design). However, on many newer vehicles pump speed is controlled by the PCM and will vary depending on engine load and speed. The most common type of electric fuel pump today is the turbine style pump. An impeller ring with many small blades is attached to the electric motor inside the pump.
O2 Sensors Keep Watch Over The Air-Fuel Mixture
Keeping an eye on the air/fuel (A/F) mixture is an essential function of the engine management system because it affects emissions, fuel economy and performance.
Contaminated Fuel Can Wreck Havoc On Fuel Delivery Systems
Although cases involving contaminated gasoline are relatively rare nowadays, they still occur. In many cases, the technician has replaced the fuel pump or mass air flow (MAF) sensor to address a P0171/P0174 “lean-condition” DTC with no result. In all likelihood, the technician didn’t consider the possibility that the vehicle’s fuel might be contaminated with E85 gasoline, diesel fuel, stale gasoline, or, to a lesser degree, sugar and water.
The Best Tests For Fuel Delivery Systems
In this article, I’ll explain how the Âbasics of testing fuel delivery problems has changed and how some of the most common mistakes in diagnosing fuel Âdelivery systems can be avoided.
Fueling Choices: Factors For Carburetion Or A Bolt-On TBI Fuel Injection System
If you’re building a performance engine, should you fuel it with a carburetor or some type of electronic fuel injection (EFI) system? If the application is a late-model vehicle that came factory-equipped with EFI, that decision has already been made for you.
Fuel Tank Installation: Avoiding The Second Drop
Nothing is worse than a comeback after a fuel tank has been dropped. Discovering that the fuel tank needs to be dropped again to address a problem can kill shop productivity and profitability. Below are tips that can help you avoid comebacks and dropping the fuel tank for a second time.
Hyundai Fuel System & Emissions Diagnostics
Take a look at the fuel Âinjection system and driveability issues on Hyundai’s line of Âvehicles.
A Clean Fuel Tank Improves A Fuel Pump’s Diet
Fuel pump replacement comebacks can be costly and can hurt your reputation. One of the leading causes of failure is the tank. If a vehicle gets 20 miles to the gallon, then more than 5,000 gallons of gas (from many stations) will go through the tank in 100,000 miles. And during this time, sediment, rust
Under the Hood: ‘Tanking’ Fuel Systems
Diagnosing Failing Fuel Pumps
