Ray Bohacz
Gas direct-injection engines
Here’s a guide to the evolution and essential care of GDI engines.
Understanding the differences in horsepower
There is a world of difference among horsepower ratings, which can cause confusion when replacing engines and motors.
Relays, solenoids, and servos
Understand and diagnose problems in these essential devices.
Adding resale value to your equipment
Start by keeping a notebook on each machine to record its history.
Understanding and maintaining wastegate devices on engines
The wastegate on turbochargers prevents it from overboosting air pressure at high engine rpm.
Dirty electrical signals
If the power delivered does not match the needs of the circuit, then it can malfunction, suffer premature failure, or have unexplained readings or response.