fuel Archives - Tomorrows Technician
Fuel Tanks and Pumps

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

Checking Your Fuel (Video)

Fuel systems can have many possible issues to diagnose. This video is sponsored by AP Emissions.

E-15 Summer Blend Fuels Shouldn’t Make A Difference (VIDEO)

E-15 summer blend fuels should be coming soon in April, but any effects they have are negligible. Sponsored by Autolite.

Seasonal Fuel Blends And Misfires (VIDEO)

Here’s what happens when your fuel does not match the weather. This video is sponsored by Standard Motor Products.

Seasonal Fuel Blends

The cause of the misfires is the temperature fuel evaporates, otherwise known as the volatility.

Cylinder Deactivation And Active Fuel Management (VIDEO)

Deactivating a cylinder requires specific technology. This video is sponsored by Auto Value & Bumper To Bumper.

VIDEO: Clean The Fuel Tank Before Replacing The Pump

Sediment, rust and debris from the pump can get into the tank and kill the fuel pump. This video is sponsored by Carter.

VIDEO: Fuel Pump Level Sender Operation

How do modern gas gauges stay still when the gas in your tank moves around? This video is sponsored by Carter.

S.U.R.&R. Releases New Oil And Fuel Filter Removal Cup

New tool keeps techs and shop floors clean and slip-free.

Fuel Pump Diagnostics: Using Scan Tools

With a scan tool, it’s possible to verify if the modules controlling the fuel pump are receiving the correct data like oil pressure, crank position and key ­position.

Fuel Trims!

Understanding fuel trims is the gateway to diagnosing common emissions problems. However, before we begin to use this information, specific criteria must be met in order for the PCM to gather accurate information.

Fuel Pump Pressure: Optimal Flow Factors

All too often, technicians assume fuel pressure is “good” without actually measuring it. If the engine runs, they assume the injectors are getting adequate fuel pressure. If the engine cranks but won’t start, and they depress the service valve on the fuel rail and some fuel squirts out, then they assume the injectors have pressure.