Im a 26 almost 27 year veteran tech and I love your videos especially these type of videos you make for us to watch and enjoy and learn from. While your classroom videos are good these are your best not only for test prep such as ASE but its geared directly at your supporters out here so thank you very much please keep posting new ones especially towards ASE style questions with your time and experience being shared its a great wealth of knowledge that even a long time certified tech such as myself respects and appreciates! I wish I could email you directly if that's ever possible let me know. Im on my wife's account but name is Bill and I live in Columbus OH.
Again another great class! Your explanations through stories is a great way to provide understanding to me.. my confidence continues to increase on taking my ASE A8 with every one of your Engine Performance videos. I really do appreciate it immensely! 🤲
SUBSTANTIAL Sir Richard McCuistian More great stories stuff loved it thank you very much helpful information 👍 Sir Richard McCuistian Only got 10 Question right From Nick Ayivor from London England UK 🇬🇧
Hello, Sir. I have been trying to understand engine displacement and how a vacuum leak affects MAF reading. To my understanding, engine displacement is how much air the engine can take in. If you have a vacuum leak, it will always reduce the maf voltage or g/s because there will be less air going to the engine: Air from the maf and air from the vacuum leak should be equal to engine displacement. Am I wrong in my assumption?
That's pretty much correct. The proper MAF reading is critical if fuel trim is to be balanced. To illustrate this, you can be watching your fuel trim numbers and remove the oil filler cap - which allows air to enter the manifold by way of the PCV system, but not through the MAF sensor - that is referred to as "unmetered air." Metered meaning measured. The ECM/PCM algorithms are written to expect very precise incoming air measurements.
You go, boy! Just take your time and don't overthink your answers! Use the diagram and common sense. Make sure you understand dynamic compression testing (I have a video on that too) czcams.com/video/YbR7Ja2E28s/video.html&pp=sAQA
@@jctyoga Congratulations! Outstanding! The L1 doesn't always have questions on dynamic compression testing (everybody gets different questions), but the first time I saw those questions on DCT was years ago and they kind of blind-sided me - took some thought to figure those tables out. And I was in a class at KC Vision with two instructors that didn't fully understand DCT - both of them had taken the L1 and hadn't even seen those questions! Anyway, it's a great feeling to pass those tests; the only cert that I have that you don't is Light Vehicle Diesel. Again, congratulations!
@@McCuistian Thank you, much appreciated!! Actually I take A9 on Tuesday I believe. I’m unprepared, was so focused on L1! A co-worker has that one plus L2 and L3. I had a lot of Data Link Connector and Emissions questions! Those I did the worst on. There was a question that showed the waveform at the battery, of a vehicle with a miss during cranking. I could not make heads or tails of it. Then I remembered your video about the “puffs” that go real high when it’s trying to build compression. Sure enough there was a voltage spike in the waveform and I was like “boom, that’s the right answer.” 😁
![ASE A6 Practice Test [Live Class]](http://i.ytimg.com/vi/nRDu5n7lLfo/mqdefault.jpg)
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Thanks sir for those insights! am always following from Uganda
Im a 26 almost 27 year veteran tech and I love your videos especially these type of videos you make for us to watch and enjoy and learn from. While your classroom videos are good these are your best not only for test prep such as ASE but its geared directly at your supporters out here so thank you very much please keep posting new ones especially towards ASE style questions with your time and experience being shared its a great wealth of knowledge that even a long time certified tech such as myself respects and appreciates! I wish I could email you directly if that's ever possible let me know. Im on my wife's account but name is Bill and I live in Columbus OH.
Again another great class! Your explanations through stories is a great way to provide understanding to me.. my confidence continues to increase on taking my ASE A8 with every one of your Engine Performance videos. I really do appreciate it immensely! 🤲
Thank you! Always learn something new watching your videos!
Thank you for making the videos very helpful.
Thank you for all the great videos!
I needed this!! Thank you!!
Awesome Video!! Thanks for doing this!
Thank you Mr McCuistian for the lectures.
For question 2 wouldn't B also be correct?
You're absolutely correct - I messed up that answer in a big way - Good eye!!! :) Both of those answers are correct.
Thank u sir,God Bless
SUBSTANTIAL Sir Richard McCuistian More great stories stuff loved it thank you very much helpful information 👍
Sir Richard McCuistian
Only got 10 Question right
From Nick Ayivor from London England UK 🇬🇧
I passed the test this year with no studying.
These questions you asked I would fail
No for real thank you
Hello, Sir. I have been trying to understand engine displacement and how a vacuum leak affects MAF reading. To my understanding, engine displacement is how much air the engine can take in. If you have a vacuum leak, it will always reduce the maf voltage or g/s because there will be less air going to the engine: Air from the maf and air from the vacuum leak should be equal to engine displacement. Am I wrong in my assumption?
That's pretty much correct. The proper MAF reading is critical if fuel trim is to be balanced. To illustrate this, you can be watching your fuel trim numbers and remove the oil filler cap - which allows air to enter the manifold by way of the PCV system, but not through the MAF sensor - that is referred to as "unmetered air." Metered meaning measured. The ECM/PCM algorithms are written to expect very precise incoming air measurements.
@@McCuistian Brilliant explanation! Love watching your videos: they are very instructional and helpful.
L1 tomorrow, oh boy.
You go, boy! Just take your time and don't overthink your answers! Use the diagram and common sense. Make sure you understand dynamic compression testing (I have a video on that too) czcams.com/video/YbR7Ja2E28s/video.html&pp=sAQA
@@McCuistian Just watched it, thank you!
@@McCuistian I passed!!! That concludes G1, A1-A8, and L1. Your channel helped a lot!
@@jctyoga Congratulations! Outstanding! The L1 doesn't always have questions on dynamic compression testing (everybody gets different questions), but the first time I saw those questions on DCT was years ago and they kind of blind-sided me - took some thought to figure those tables out. And I was in a class at KC Vision with two instructors that didn't fully understand DCT - both of them had taken the L1 and hadn't even seen those questions! Anyway, it's a great feeling to pass those tests; the only cert that I have that you don't is Light Vehicle Diesel. Again, congratulations!
@@McCuistian Thank you, much appreciated!! Actually I take A9 on Tuesday I believe. I’m unprepared, was so focused on L1! A co-worker has that one plus L2 and L3.
I had a lot of Data Link Connector and Emissions questions! Those I did the worst on. There was a question that showed the waveform at the battery, of a vehicle with a miss during cranking. I could not make heads or tails of it. Then I remembered your video about the “puffs” that go real high when it’s trying to build compression. Sure enough there was a voltage spike in the waveform and I was like “boom, that’s the right answer.” 😁
How does the spark plug seal compression if not with the washer?
That's part of what the washer does, but it's not the only thing - the washer - and the bevel on other spark plugs - both seal and conduct heat.
On 24... Wouldn't the O2 sensor go rich? Since the fuel injector wouldn't know that the spark plug misfired it would still Squirt fuel.
Because when a spark plug begins to misfire the oxygen sensor sees all that oxygen it doesn't care about the unburned fuel.... Which it cannot see