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In this video I have a look at a customers 2016 Chevy 1500 5.3 that has a customer complaint of an EVAP leak. All of us in the rust belt are pretty familiar with these rot box Chevy's and their EVAP leaks so I was pretty surprised when the customer told me he had it at two shops and they both told him there was NO LEAK! Needless to say I was disappointed after recording this one to find out Hellen Keller could have found this one.
*Follow Up Video* https://youtu.be/SU-krxfOq_o
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Hey there viewers! Welcome back to the South Main Hall Channel Got 2016 Chevrolet It's got the Big Five Three Money lights on. Apparently it's been several other shops and nobody can fix this evap problem. They tell them there's not a leak and there's nothing they can do. His inspection's out by a few months and he wants to know if we can, uh, help him out.

Holy scan here. See what it has? We can guess just as good as the next guy. so let's see just one coat. but I did see a uh little scan tool in there.

so I'm assuming that's it. The old cold clearing routine EVAP System: Small heat detected. All right, not a problem, right? Should have a small leak. Let's go in here.

Uh, let's just have a look at some preliminary things. First of all, let's look at some live data. Let's see what evap. Whereas I can't read and don't get everything up after admissions.

All right, it's venting. We want to see our fuel tank pressure. All right 1.5 So that's right on the money. Let's um, fire it up here and see if we just have a purge stuck open.

Excellent. We expect to see no change in the uh fuel tank there. Foreign check here? Uh, let's see. let's make sure we have control of the vent.

Bell and we want to do the dent now. see if we can hear it. Okay, probably more like that. turn the switch back out and make sure well and it doesn't shut hands standby.

Guess what? I didn't have the key on it. Let's try this again. This is pretty loud when you're clunking away back there, so that's good. I Do want to do one thing.

let's go to not many. Let's just go ahead and start it. Do a freaking concealed all right? So let's uh, put a little bit of a vacuum on the tank here. All right.

We're going to seal the system up radio. DK and we're dropping down. so I'm pretty sure we probably have a leash it is dropping down Road Not relatively quickly, but I guess just enough you can see where the purge back on it again come off and we do have a fair amount. Okay, so we shut it off.

foreign. Of course we're back to the atmospheric pressure. So uh, we know the purge works. We know the cancer vent valve works.

Let's get out of the Avoca smoker and see what we can do here and see if we can see a leak. See what the smoke machine indicates? Let's see here: I Need to get a little adapter. show you this one here. Unhook the line right off the purge valve because there is no got a little spout.

I've gone through no trigger valve rally so click that in there. I'll hook up the Avoca smoker I'll get a hose to turn that baby on. All right. she's gurgling away over there.

We got smoke get on there and then what we're going to do is we're going to seal off the system so not venting so now it's sealed off. Our fuel tank pressure should start increasing and it is just for poop and laughter here. Uh, while I was gonna show up now, we'll let her get filled up. There's a flow gauge on the smoke machine.


If it's flowing air through the system, we're gonna see it. I'm assuming it is because uh, the DK rate under vacuum was I think a little higher than it should have been. One thing I didn't look to see is how much fuel is in it. Oh, remaining fuel 4.23 gallons.

so Tank's almost empty. Gonna take a little while to fill that little guy up. Give her some time, we'll see what happens. Here's the flow gauge what we expect here: I'll Kink off the hose so as it quits flowing, you know the flow gauge goes down.

You know it has a small leak. We're probably going to see it around this area down here. Let her sit here and fill up the system and see what we see now. I Have seen in some rare cases, very rare cases where a system will hold pressure but it won't hold back you and that can be a little trickier to diagnose so we'll see what happens.

So one thing I did while I'm waiting. uh I logged in put the VIN into uh GM Klid to see if there's any programming updates that pertain uh to this code. uh but there's not, so we're good in that regards. and I'm thinking we must have a pretty good size leak because that doesn't come down here.

I'm gonna give her a few more minutes I'll start getting a lift under it. not only can I smell it I can hear it gurgling out there I took a little bit of soapy Luger as they say, because I could hear it hissing back here on top of the tank. I Don't know if you guys will be able to see this or not, but I'm not doing that because she's uh, blowing some pretty good bubbles up there on top of the sending unit. so super super common.

You're in the PRN Why? this is one of the plastic ones. so the metal saying units that GM makes they ride out in the plastic ones. Well, they ride out. What happens is the metal lockering that holds the fuel pump into the tank.

it uh, gets Rusty and then cracks the top of plastic. but she's a 16 so she ain't got long from the world Anyways, really not much more to see here folks. I Was hoping it's gonna be something exciting being that it's been at multiple shops and been smoked to every one of these shops according to the customer and he keeps getting a report back that there's no leak. Uh, Not only was her leak, it was a really big leak so it was easy to find which is great but I was hoping that was going to be something else.

so I can't make the videos up. They are what they are. This one needs a new fuel pump assembly and a new lock ring. It didn't look too terrible.

It looks like we'll probably be able to reuse the tank sometimes. Underneath the little tabs rust off the tank and then you're screwed. Now you gotta buying the tank. They make some repair kits but I don't know how about those so that's it.

The only thing I do know about is you need to go in that comment section questions. Comments: Instinct Facebook You guys want to do it, doesn't want to be responding to it. You can do it. Thanks for watching.


Thank you.

100 thoughts on “An evap leak 2 other shops couldn’t find”
  1. Avataaar/Circle Created with python_avatars Chris says:

    I learn so much from you Eric. Thanks man!

  2. Avataaar/Circle Created with python_avatars Kevin says:

    Show us the tank switcheroo… PLEASE n thank you

  3. Avataaar/Circle Created with python_avatars Lewis Taishoff says:

    Really appalling how many shops just don't care to work. Eric, you da man!

  4. Avataaar/Circle Created with python_avatars Hola! merritt McDowell says:

    Why is he slurring his speech he sounds super weird

  5. Avataaar/Circle Created with python_avatars Omardottcom says:

    This freakin guy man, he’s too good.😂👏🏾

  6. Avataaar/Circle Created with python_avatars Don's Junkmail says:

    Chrysler puts food on your kitchen table.

  7. Avataaar/Circle Created with python_avatars Daniel Suarez says:

    General Motors back at it again with their general mistakes😂. You’re such a Goat you make the wolves cry!

  8. Avataaar/Circle Created with python_avatars Wade Taylor says:

    👍

  9. Avataaar/Circle Created with python_avatars Spudth (The way I do it) says:

    Eric, if you were a young girl/woman I'd say you sound so cute! Haha!

  10. Avataaar/Circle Created with python_avatars Snap Product says:

    « 2016 chevrolet » just like the way he says that, make my day every time!!! 😀

  11. Avataaar/Circle Created with python_avatars P Lor says:

    It just took one shop with integrity in their work.

  12. Avataaar/Circle Created with python_avatars Adam’s Family N Fun says:

    What scan tool are you using again? And which do you recommend for diyer with a lift who wants to work on cars in his spare time?

  13. Avataaar/Circle Created with python_avatars Latarian HoodRat says:

    2016 and it's NOT LONG FOR THIS WORLD???? OMG! Why doesn't everyone sue the government or something!!! I have a 2006 Sonata that looks like new…. Western Canada…..

  14. Avataaar/Circle Created with python_avatars kicknsystm says:

    Wow, great job not only diagnosing but explaining along the process. I took my vehicle to the dealership in a last -ditch effort for a diag. They apologized for not being able to help but (still charged me $131.00) but what they didn't know was the little bit they did tell me, I interpreted so evidently they need better people. I subscribed here long time ago & I never stop learning, thank you!

  15. Avataaar/Circle Created with python_avatars David Pickles says:

    2016 and it's so rusty. Ugh

  16. Avataaar/Circle Created with python_avatars Scooter30FTW says:

    I figured the Avoca smoka was coming out on this.

  17. Avataaar/Circle Created with python_avatars Gregory Glessner says:

    I clicked just to see Avoca Smoka in action!

  18. Avataaar/Circle Created with python_avatars WEStTEXAs says:

    I recently came across an Evap leak on a 2018 Chevy Traverse with the capless system . Could not for the life of me find a huge evap leak ! My smoke machine was pressureising the system and sealing up the little flapper door.Thus not being able to find the leak. When I would purge and seal the system with engine vacuum wouldn't hold vacuum vacuum well huge decay. Come to find out the leak was at the flapper door I could actually hear it and when I put smoke near the capless system it would suck it inn. gave me a run for my money 💰

  19. Avataaar/Circle Created with python_avatars Dowsett says:

    It is so weird to hear, that being the vehicle is 2016 it ain't got long for this world
    Here in Utah, I have a flawless 2007 Avalon body wise – I know you mentioned it before, it still just blows my mind.

  20. Avataaar/Circle Created with python_avatars Kevin Culver says:

    “Soapy WOODER” Classic shoutout to ChrisFix.

  21. Avataaar/Circle Created with python_avatars MrCumminz says:

    Just wanted to let you know IMO you do a great job with the videos

  22. Avataaar/Circle Created with python_avatars Rick Fletcher says:

    Why couldnt the other shops find it? If you can do it they can do it😜😜

  23. Avataaar/Circle Created with python_avatars David Sawyer says:

    I wonder if your viewers actually listen to the words you speak. You clearly stated a while back that you were undergoing some dental work.
    Have a great day !

  24. Avataaar/Circle Created with python_avatars Iain Kinsella says:

    Phase 4 leak

  25. Avataaar/Circle Created with python_avatars jack002tuber says:

    If you can do it then I can do it? How come the other two shops can't do it? LOL!!!

  26. Avataaar/Circle Created with python_avatars Buanna Jim says:

    I would love to think you're joking about your pinned comment, Eric, but I'm sure you're not. Must be they aren't as regular a viewer as many of the rest of us who got the news a while back. It's great that everyone is so concerned for your well being but all this unwanted attention is nuts. On top of trying to adjust to your new dental fixture, while still trying to make viewer content, you have business run and a family to support. I really hope things settle for you soon, my guy. Hang in there, brother.

  27. Avataaar/Circle Created with python_avatars billy says:

    Man I was hoping for a long drawn out diag. But we just get the regular old shops suck and didn’t do a damn thing. Good find either way.

  28. Avataaar/Circle Created with python_avatars Joe Vaagen says:

    They said it wasn't leaking is THEY DIDN'T WANT TO DIAGNOSE OR FIX IT beyond plugging in their "code reader"

  29. Avataaar/Circle Created with python_avatars DouglasH says:

    Hi Eric and the lovely Mrs.O., This is why everyone is sent to your shop Eric, you don't guess you diagnose and repair it!!🧐

  30. Avataaar/Circle Created with python_avatars H Goff says:

    As usual, you used logic. I guess it had been a big ole busted hose on top of the engine – that wiggles when the car runs, another shop would have found it…

  31. Avataaar/Circle Created with python_avatars Bob Hudson says:

    What is the full and correct name for Avoca Smoka? Tried looking here in Land Down Under and no luck. Thanks. Retired mechanic (maybe tired mechanic)

  32. Avataaar/Circle Created with python_avatars Jimmy, Making it work says:

    GM truck evap issues….Purge sticking open or dirty/clogged vent system…On to the video…

  33. Avataaar/Circle Created with python_avatars sparky obrian says:

    love that Avoca ‘Smokah.
    expensive bit of apparatus but a great tool.

  34. Avataaar/Circle Created with python_avatars kas0016 says:

    It's clear the two previous shops didn't even bother to smoke it.

  35. Avataaar/Circle Created with python_avatars Rons47 says:

    I think you need to hook yourself up to the Scan tool

  36. Avataaar/Circle Created with python_avatars FoamCrusher says:

    Please get a better microphone. It is difficult to hear you when the motor is running.

  37. Avataaar/Circle Created with python_avatars dchawk81 says:

    How much you wanna bet they actually found the leak but noped out of the effort required to fix it.

  38. Avataaar/Circle Created with python_avatars Bill Ziegmond says:

    Maybe the other shops didn't want to drop the tank. LOL