First time I’m understand purge valves & vent valves, I can sit thru the whole video cause the explanations are simple & good & I visually see what he’s talking about

Deo, your adherence to logic and thoroughness is inspirational. After watching one of your videos I have a deeper understanding of the systems you are working on. You are a wonderful teacher and I am grateful.

Good explanation. I ran into a similar problem on my 2010 Chev Silverado 1500 pickup. Had the check engine light on. I hadn’t had the truck too long. Bought new. Had the dealer check. They told me I basically had a tiny vacuum leak. That they reset and cleared the code. Me being from old motors asked that there wasn’t a serious oil pressure issue. They said no. That your alright to drive it like that. Said that minuscule leak to find it would be like looking for a needle in a haystack. They said if it comes back up bring it back and they’ll dig further. Wasn’t very long and it was back. Didn’t go back. Drove it like that a long time. Ran into other issues way later on. Local guy fixed those. Then with this he had a diagnosis tablet but started first looking that the gas cap was sealing. I said it’s almost like I smell gas when I fill up and I questioned if the feed in tube was cracked or something. Anyway he cleared it and it was right back. With what he could on the tablet we then changed the vent module. Had to cut the hanging spare down as it was located above that under the box. Got that changed. He said that was stuck open. He cleared the fault but at the same time took my hand mirror to try look at the fuel pump and sending unit that sits in the top of the tank. He said it looked like it was wet. I had it maybe a few days and the same fault. Well this next job just like you have here; getting to and pulling the fuel pump/sending unit will cost you plenty in a garage. Some people have been known to cut a hole in the box to get at it. Well he took and dropped the tank. Found the plastic flange that is on the unit, that sits against the tank when it’s dropped in was cracked about half way around. Saw the pics. Got that removed and replaced. End of check engine light issues.

I wish he lives in my city bc I’ve been to many mechanics just change new parts without diagnosing the problem and wasted my money. Thank u for educating us!

Absolute best diagnostic videos ever!!!!!!!!!!!! Thank you sir

Glad you uploaded the video, your voice wasn't nearly as distracting as you thought and the diagnosis was a masterclass 👍

Mysteries of the EVAP system finally solved. I now understand the evap system. You explain things very well. Thanks for a great video!

Just to say "You are a excellent teacher" THANKS...

Thanks for sharing this excellent diagnosis with us and get well soon👍.

wow....a perfect diagnosis and fix.....i need to buy a bidirectional scan tool

you are really good Sir in explaining the possible trouble and finding the problem. i am not a mechanic but i love watching your videos explaining the function and operation. thanks

Great video! I can understand everything you are saying. Thanks for being so detailed 👍🏽

Hello brother good to see you again thanks for sharing your knowledge GOD BLESS YOU

Thanks for the video and wishing you a quick recovery.

Well done for fantastic explanation

Well, no problem comprehending whatever you're saying. Thanks for the vid

Thank you, you are a great teacher, great breaking it down and explaining.

At the beginning , I hope you are fine and you are better now , secondly I enjoyed watching your informative videos , thank you very much my friend , it is appreciated as usual , thanks Deo.

Great explanation on the evap system. I have an evap vent control system circuit code. Shop replace the vent solenoid, and the code is still there. I'm guessing I have a wiring issue somewhere.

Great job! Very professional and proficient. It renews my faith that there are good and reputable mechanics still around.

Deo, I finally fully understand how the Evap system. Thanks to your great teaching 👍 by the way get some honey and lemon tea for your voice bro !

You are the best I'm learning with you thanks your my teacher

Great job and explanation and your voice is fine.

Hope you feel better my brother

Good job, very informative. Thanks for your effort.

finally I understand EVAP system and how to test it thanks man 👍

Thank you for explaining that system

Great video - thanks for all the detail

this test is another level, keep it up.

You did your best job But why the engine control unit not show code of fuel tank pressure sensor fault Thanks bro

Great video, Deo!

Keep up the great work

You mentioned a circuit problem which can be technically correct, not so much a wire problem as a component electrical failure, my GMC Library shows a clogged Vent Filter and a Fuel Tank Pressure (FTP) Sensor for this code. I hope yours is different so I can add another repair to my Library, still watching......Well, no luck today. I wish you would have at least retested the sensor signal pin to verify a voltage change and the correct voltage that should come from the FTP at static atmosphere pressure, the bad sensor showed 0.25V if I am correct. If you perform a test procedure on a bad part, please follow up with the same test procedure on the NEW part as well so we all know what a good test looks like on a good part. We also do not want to waste our time to bolt up the fuel tank in this case just to read the scan tool and notice a problem with the new part, now we need to drop the tank again, order another new part, etc, & do the proper test procedure again before bolting up the tank, YES, PLS. Many of us simply don't fully trust the scan tool so we like to back up our testing with direct voltage testing at the sensor which you did half of the procedure. Thank you for all the videos that you produce, very much appreciated. SMA listed it as a GMC and Chevy, its been highlighted in my library to move it to Chevy only, your video will go in GMC LOL, kzfaq.info/get/bejne/aryRpraEvqjFnGg.html

good job and you are 🎓professor

Great repair video thank you I have question Would you recommend autel scanner elite pro || I’m trying buy one Thank you 🙏🏾

Great video thanks for sharing.

What to more videos like This. I really like your videos. Thank you ❤

take a day or two and get well before you get real bad sick. great video!

Good job 👍

Good and best video Brother

Great video helped me with understanding the purge valve and pressure sensor

Bro your explanations are crazy good 👍 got a new sub!

you are the bets my friend

Thank you it was easy to understand

you are a bad man keep up the good work

Awesome man, you make great videos! I just subscribed 😊

Very thorough test. Nice job! I have a 2002 chevy silverado and have had p0446 on my truck for a long time, could very well be the same problem. Thanks.

Thank Brother 👍👍👍👏👏👏

Well I replace the purge valve and the vent valve, but didn't do the fuel tank pressure sensor, that might be my problem. I dont have obd scanner, just have a cheap scanner that gives codes only. Well guess what I'm doing buying the pressure sensor for fuel tank. Hopefully my check engine light goes away. Thanks for the break downs.

Good work is victor jatta from Gambia

Excellent video brotha thanks

HEY MAESTER GREETINGS TO YOU AND ALL YOUR FOLLOWERS HOW ARE YOU? 👍👍🙏

Respect 🎉u are my favorite person nice friend

Great job.

I understand everything you were saying. But I need to understand if I don't have the scan computer that you have. But I do have a FIXD SCANNER which told me that the code P0446 indeed is the code. Soooooooo what I'm asking is can I just change the part since it's telling me that it's one are the other, most likely it's the one by the fuel tank. Only because I don't have all the tools you have. ( So can I just change the part myself ) Thank for giving us understanding to this.

Gracias hermano 🙏🩵😊

Thank you friend.😅

Hello Deo, I learned a lot from watching your video! I’m researching how to fix my P0446. On my initial scan of my vehicle it said it has “excess vacuum” and well it tends to spit gas back out when fueling. Would that be because the vent valve is bad? Would maybe need replacing? Would love to hear your opinion

Hello I have a 2005 Chevy Tahoe 5.3 and it won’t crank from key but I can crank it with a wire rand from the stater relay to the battery could u help with some information on how to get it to crank with key

👍👍👍 in this case did the custmer complaind the smil of fuel inside the cabin or around the car?

I subscribe to your channel just because

Hi I’m so happy for u’re explanation but I have same yellow light stay on. I have Mercedes Benz E 350 4 Matic 2011. Where’s your location I can bring to you. Thank you

Great info Thanks Bro 👍🏽#GetWellSoon

You’re a doctor

mine is building up a lot of pressure in the gas tank with this code. would it be charcoal canister? if replaced every other part you have tested.

May God help me to understand scarn tools very well 🙏🙏🙏😢🙏

hello my friend,,

As you know the vehicle will not run the test with the fuel level in between half an empty.

Singing too much reggae😂😂😂❤❤❤❤❤🎉

So if at all uou changed the Evap sensor it wouldn't have work out so now the problem is that the fuel pressure sensor that got spoiled triggered the evap code on

What kind of scanner, do you use?

I got same truck with p0420.... Then it threw at p0300... I hope my cat is just clogged and caused the 300 code

Hi Sir. I have emailed you regarding my Freightliner Sprinter 2500. I hope you will be able to respond to me after reading it. Thanks in advance.

Nice video. Full of good info.

Good job 👍