Engine Performance Practice Test

I'm a DIYer but still enjoy testing my knowledge !Thank you for the video !

Thanks Sir, for another great video. And I wish you, a happy new year. 🇵🇹

Great presentation. Always like the test questions with the explanation afterwards 😀 When you say a late ignition timing causes a low vacuum do you mean valve timing? The word ignition confuses me. Thanks sir 👍

Great video! Thank you Sir

I think I figured out why you have so few subscribers,the name of the channel is the problem.I think you need to rename the channel to Automotive something and you will get a lot more subscribers!I'm lucky to have stumbled upon your channel.Your a great teacher people need to find you !

Can you explain how a lean air/fuel ratio burns hot and fast? Is it because if the 02 sensors are reporting more oxygen they start adding more fuel?

All your videos are very informative. Thank you for putting out videos of what it’s like to sit in a automotive lecture. Reminds me of being back in college and has really helped me prepare for ASE tests!!!

I have watched many of your videos and I have always gained some great knowledge from them, so thank you for your help along the way!

Thank you for making this video. It helped me ace the A8R Engine Performance ASE Test yesterday. This was only the third time I've aced an ASE test since 1979.

Thanks you! Great job. I’m studying for my L1 and this was a very good overview of engine performance

Thanks for such a great video.
Please make more like this for all ASE tests.
May God bless you and your loved ones.

Hi I am having a problem with a car and I am really hoping you can help me. I have a 2011 Chevy Cruze 1.4l turbo. The codes I have been getting are a p0341 cps range performance and a p0171 fuel trim system lean. Another shop changed the intake gaskets, the injector o-rings and the purge valve and were unsuccessful so now it is here. Upon driving it I noticed the codes would come up as pending and go away before they would set as a hard code which I thought was weird. Wile I was looking at the intake side and testing that cam sensor while it was running I noticed it was vibrating like something was hitting it. I took the valve cover off and noticed the reluctor ring was coming into contact with the sensor putting a grove in it. The guy next to me suggests to bend it straight. We managed to do that without braking it but when I started it up it seemed to be running a little rough. I drive the car home for the night to see if the code re appears. Just the p0171 code comes back. The freeze frame data is as follows distance since first malfunction 15mi, distance since last malfunction 24mi,
Short term-3
Long term 30
MAF 2.85gps
IAT 78.8F
HO2S1 .77V
HO2S2 .77V
TPS 14.4
Ambient temperature 39F
BARO pressure 99.0kpa

My thinking is the reluctor ring being bent is causing the sensor to read improperly causing these issues. I think that is my best guess because that is the only part I found to be defective. Is am hoping you can help me!!! Know one at my shop is a master tech and I am the best shot this car has. I am tired of driving it to set all the monitors lol I am thinking it is this but the job is very labor intensive and before I do the job on Monday I was hoping you can read this post and give me some advice. Thank you for your time and have a nice day!!!!

"....What's the answer to number two...?"