In this excerpt from the A8 ASE test prep program, Instructor Dave Hobbs discusses some tips and tricks regarding various ways to perform a back pressure test. He also talks about how to make your own tool for this purpose and tells you what to look out for on the ASE A8 exam regarding back pressure related questions.
The fuel trims are what govern what’s going on inside the engine. This video is sponsored by Auto Value and Bumper to Bumper.
Let's take a trip. It's 1974. You're in Denver, Colorado. You're in your car that has a carburetor, and you're getting ready to go over those rocky mountains to go to California. You've noticed that you're halfway up the mountain, the engine's starting to struggle. You go a little bit further. You notice that you start misfiring and the plugs are fouled. So what's going on here? Well, essentially with this, you have the blue, which represents oxygen, and the red represents fuel, and this is the perfect ratio. But you're taking away this oxygen, and when you take away the oxygen, you should take away the fuel. Carburetor can't do that because it has fixed jets, and the metering stays constant no matter what altitude you're at. This is why certain shops in Colorado specialized in carburetor tuning. Let's fast forward 50 years, and you're in a modern vehicle.
This video will focus on how a product like CAT COMPLETE can improve the chances of completing the monitors faster. This video is sponsored by Rislone.
Regenerative braking helps to increase the overall efficiency and range of the EV, increasing the range of an EV by up to 20%.
PRT is a global OE supplier with more than 5,000 products available in the United States.
Learn to install PRT Heavy Duty’s gas-charged shocks for enhanced driving stability in trucks and buses.
It is always best practice to replace the thermostat on a vehicle after it has overheated. Sponsored by Auto Value and Bumper to Bumper.
Evercoat will provide educational opportunities and resources for instructors, students and active technicians pursuing careers in collision repair.
The Lift and Pin is designed to simplify tensioner replacement and belt installation.
The large batteries that EVs carry need to be maintained within a specific temperature range for optimal performance.
