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In this video I have a look at a customers GMC Acadia that came in with the check engine light on for an EVAP problem and he also wanted me to replace a leaking exhaust gasket. The EVAP problem is really common and a really easy fix. The exhaust wasn't to big of a repair either.
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Uh 2016. it's got the big three six engine lights on. We've got some exhaust gaskets to replace here. Chevy I Got some of them wanting a light is on 111 000 miles on this little fella.

So let's uh, pull her in here, see what we can do. Let's place our bets on the Uh engine light. I'm going for your uh, classic Evap problem. Let's see here.

uh purge valve? we'll call it. see what the survey says evap, permission system flow during nine Purge classic and then a couple tire pressure sensor things here. but the engine light wise. your classic Po496 probably done a million videos on these or could have Purge valves probably just stuck open.

he's gonna pop the cover off I Guess we can do it right here. Let's um, let's hop in the ECM here. Let's go right to live data. Get him here.

What we're going to look at is fuel tank pressure. So we'll go to Uh Evap here right there. And then we wanted to look at Purge Command. You want to see where our event solenoid's doing and then we want to find our fuel tank pressure sensor right here and here.

And when we start it, the purge valve should be, you know, remaining at zero for a certain period of time. but we mostly we shouldn't see any change in people. think pressure. Okay, that makes sense to you.

get my clicker work. Uh, let's see, we need to change this minimum. We'll do negative 10, maximum 10. that way we can get a little finer measurement here.

This shouldn't change at all when we start it, but perk is stuck open it will. Let's see that there's your problem here. so they're chilling back to zero. Classic All right, we're going that one, so that's that.

that's a too big a deal on. Chevy All right, Big Three Six here. Pretty pretty common. Pretty pretty common.

I Use two Pretty. That's how you know it's common. ink that thing off it begs the question How you know that the purge valve isn't okay or shorted and you know creating the problem when it's easy. Uh, a to be a different code B you could see that in scan tool when you look at Purge circuit status and D or E wherever we're at.

If you want to know, just unplug it and if it's still stuck, then Bingo Bingo was his name-o I've been doing 25 years I've never seen one shorted electrically to the point C is open I Know, 50 or 60 people in the comment section probably have, but I personally have it. So I'm going to take a guess if I'm wrong. Well, by Galileo eat it on camera. so let me see if old Nappers got one.

Hopefully they do. They usually do. and then we'll um, we're gonna fix the exhaust. In the meantime, there's a blower out gasket.

The other ones look okay. This one's been done before. It's got nuts and bolts on it there. Oh it must be a had a flex plate put on it.

looks like we'll have to heat them up a little. All right. Looks like we came right loose for us. Yep, that one getting loose.

That one came loose perfect. and then uh I think the gasket must be in my ear fell out here. I don't see a little bit of Remnant set of it up in there. Let's see about getting this hanger off here so we can let the exhaust down a little bit.

I don't know there we go. that way we can clean up the gasket. Now what's going on here I Think my little too abusive to our stand. it's time for a new pipe.

It's this way here we we're gonna add something pulled down or not too hard even though it's kind of hanging on its own. Anything cleaning off our gasket because we don't want to go tweaking on this flex plate too much because it will break. Thank you! Let's get some 3 8 bolts here. We'll put through the gasket just fine.

Oh man down, we're good. Stick this in here temporarily. let's see here. Probably should have thought this out a little bit better here.

Stick that up there like that. You guys probably can't see anymore. I Guess we do need the light of that little better. We'll get our rubber hanger put back on there and get the other bolt stuff in there.

Also got an easy fix for today on this one. Get her hangers for something bad happens and there's that big. All right, Pretty easy. They have some wrenches and we'll snug that up there.

We have it all done. That's an OG right there. I Want some good shape? Of course that's the one we fixed. So hey, I Like to say it looks like somebody put a front pipe on it at some point.

flex plate spray right out of it. But anyhow, I'll seal that up for him an ampers. there's gonna be a few hours on The Purge Valves will shove it outside. Got a Nissan out there we'll bring in I Guess it's leaking gas out of the uh injectors so we'll look at that.

Oh let's see work on this one outside. Pretty easy. Same type of gas line that you already have a little Pinchy Every little pinch a 10 mil undo the screw wiggle. Oh wow, it's actually a OEM doesn't mean it's rear.

delighted. I think the last time the changes what they put on it stuff here. that's the O-ring Okay, get this little fella spin that just so whoa. let's stick more ground there.

Put that pushed in the O-ring up here. They're spacing where you're not caught. close your eyes, give that a little kiss, a little spit on there. she'll slip right in.

trust me and that won't work it Back down. Back through specs of course there. is one plug that in. We'll do this.

Boom. Take a bowl right through this one. Probably right. That proves it was bad.

We were right. Stick this thing back on here. Oh there we go. This one here.

We need to get set back up here. Back back out here. we're going to trouble codes. We'll clear them little guys out.

reread them. No codes. We'll like. Data missions.

same castle fired up this time. We see change so we know it's working. We're good now that you doubted me. but I figured I'd just show you what good looks like I did put his other gaskets back in here for him so that's it it is.

Tuesday So there's your two for Tuesday This video was gonna be pretty short on this Chevy so I thought we'd throw it in an extra bonus video for you, huh? How's that for a nice guy? Pretty good I guess uh. so let's say we got some more Chevys that Chevy there is from The Used Car Guy 2014 and uh, apparently a bunch of Lights On By walking outside you see the brake lights were stuck on an open door and there's water running out of the dash onto the brake controller and I turn the brake controller and half quarter wire fell out of that. so I unplugged it and the brake lights went out. but I'm sure that's going to be a real sweetheart one over a little mileage baby.

Remember folks, not all junk cars. What do they say? Not all cars from the auction or junk. they're all junk cars are at the auction. So I guess with that being said, hope you guys enjoyed your two for Tuesday Let me know in that comment section what you think, how you feel everything else you want to tell me down there entity Facebook You guys know what to do.

Just remember this: If I can do it, you can do it. Thanks for watching Foreign.

98 thoughts on “Gmc acadia: purge flow problem exhaust repair”
  1. Avataaar/Circle Created with python_avatars jon wilson says:

    any time a torch is used its a good video

  2. Avataaar/Circle Created with python_avatars DIY Dave says:

    Saw this one backwards from the Toyota video. Always enjoy everything you do for us, Eric! Thanks!

  3. Avataaar/Circle Created with python_avatars Guy Martin says:

    I Love watching your Videos.

  4. Avataaar/Circle Created with python_avatars ykmalachi says:

    NAPA isn't a sponsor….. yet has a huge sign on front of his building.

  5. Avataaar/Circle Created with python_avatars Scotty Parker says:

    Another good video Eric appreciate you you do good work son

  6. Avataaar/Circle Created with python_avatars Robert La Cob says:

    A nice quick fix! Using past experiences and gut instinct come in real handy when first diagnosing. Customer will happy with a short labor bill!

  7. Avataaar/Circle Created with python_avatars Scott Tucker says:

    Maybe I missed it But isn't Napa now a Sponsor

  8. Avataaar/Circle Created with python_avatars ron watson says:

    Love this guy. Thanks

  9. Avataaar/Circle Created with python_avatars D says:

    Only a true gentleman spits on before he puts it in (the purge valve of course) 😂

  10. Avataaar/Circle Created with python_avatars Scott Hill says:

    Must be a Florida car, those bolts came loose so easy.

  11. Avataaar/Circle Created with python_avatars Asap Rulers says:

    Have alittle exhaust leak. Its on a 3.5 dodge right out of the little flex bubble looking thing. Any ideas on a fix? Dont want to buy a new cat….

  12. Avataaar/Circle Created with python_avatars RealEyez RealizeRealLiez says:

    Eric, you're an American treasure, truly. Godbless you and your family!

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


  14. Avataaar/Circle Created with python_avatars Sean Dick says:

    Eric, where do I get those fancy needle nose, slip joint jobs? I don't see them in your Amazon store.

  15. Avataaar/Circle Created with python_avatars old biker says:

    there's 80 % fuel in the tank , wow that's unusual .

  16. Avataaar/Circle Created with python_avatars Mminnehoma says:

    Looks like we'll have to heat 'em up a little … 😂

  17. Avataaar/Circle Created with python_avatars Clint Price says:

    Nice job as always Eric, once again spot on with the silent torque wrench 👍🏼
    You’re too humble to admit it but I think you’re the best mechanic on you tube, I think Ivan is also excellent with his diagnostic videos and Ray does a great job too but he doesn’t have to contend with much if any rusted cars. A shout out to Mrs O who is always a welcome visitor on the channel with her great sense of humor and how she plays along when she’s in the shop. What a great couple you both are.

  18. Avataaar/Circle Created with python_avatars A Smithh says:

    It is NOT surprising facts that Chevrolet being beyond the end of the chit stick in quality since the VEGA was Chevrolet flag ship!!!

  19. Avataaar/Circle Created with python_avatars Rafael Marin says:

    👍👍4 Tuesday

  20. Avataaar/Circle Created with python_avatars Paublus Americanus AMERICANUS says:

    Of course I want to see the auction car with the water running out of the dash. What gets me is low mileage auction cars. I twer thinking, low mileage because "they are horrible to drive". Of course Eric O could have a twofer by using his big probicus on the auction car. Well the battery will probably be dead with the brake lights on just sitting there. Darn it Eric show us the big money auction car.

  21. Avataaar/Circle Created with python_avatars MarkSD56 says:

    Thanks. I still can’t do it. 🎉

  22. Avataaar/Circle Created with python_avatars Just Smitty says:

    You should stock those purge valves. You replace them so often

  23. Avataaar/Circle Created with python_avatars John Taylor says:

    I had a Express van no start it was a failing electrical connector that got the pins hot. Replaced the fuel pump all was well but a day later, it set a emission code so I had to pull down the fuel tank a second time to replace the NEW defective tank pressure sensor. Don't throw away old sensors a lot of the new ones are junk.

  24. Avataaar/Circle Created with python_avatars Mitch van Kesteren says:

    When the flashlight fell, I’m so happy I didn’t have to hear “unforeseen gravity of the lumens provider due to magnetic failure” or something unnecessary like that

  25. Avataaar/Circle Created with python_avatars Billy G says:

  26. Avataaar/Circle Created with python_avatars bob m says:

    Was wondering before you did it, if you would spit on the rubber gasket, lol

  27. Avataaar/Circle Created with python_avatars ProblemChild1958 says:

    I have never seen a purge valve eaten on camera!

  28. Avataaar/Circle Created with python_avatars Mark Malikowski says:

    Always a great video when Vic comes around. Great job Mr.O.

  29. Avataaar/Circle Created with python_avatars Kevin Armknecht says:

    Thanks for the two fer!

  30. Avataaar/Circle Created with python_avatars Bear's Sh*t says:

    Torches the head off "Looks like it came loose for us". I almost choked on my Pizza.

  31. Avataaar/Circle Created with python_avatars 2003RFVert says:

    All I want to say is Let’s Go Brandon!🇺🇸🇺🇸🇺🇸 keep up the good work Eric O! YouTube won’t be the same without ya.

  32. Avataaar/Circle Created with python_avatars Jonathan Sewell says:

    I just had that exact same code on my 08 Acadia, it turned out to just be a loose gas cap though.

  33. Avataaar/Circle Created with python_avatars Les Reeves says:

    Ah some gas axe action (even if only short) my favorite tool you own Cheers.

  34. Avataaar/Circle Created with python_avatars Fix It 1975 says:

    I like the king sized whizzy wheel. That's nifty. Central Pneumatic?

  35. Avataaar/Circle Created with python_avatars Robert Parker says:

    I’m so confused right now. You literally say in just about EVERY video “got the parts from Napper ….’not a sponsor’…” BUT I
    I just noticed the sign on your shop,says “NAPA AUTO SERVICE CENTER”. So you literally pay them a royalty to say they don’t support you????

    Ehh, what ever, I love your channel and I always learn something 😂

  36. Avataaar/Circle Created with python_avatars Rob Mut says:

    I only stay subscribed to see how Eric’s teeth turn out. 😉😬

  37. Avataaar/Circle Created with python_avatars alvin rose says:

    Two for Tuesday. But I only seen one. Am I missing something. Didn’t see any leaking injectors

  38. Avataaar/Circle Created with python_avatars Ronald Brosius says:

    I'm just letting you know how I feel. Alot better now after watching a SMA video 😂. Keep posting ,and keep up the amazing work. Thanks again for your time.

  39. Avataaar/Circle Created with python_avatars jeremy clark says:

    Always entertaining: “just put a little spit on it. It’ll slide right in. Trust me!” I truly lol’d!✌️

  40. Avataaar/Circle Created with python_avatars John Reece says:

    Hi there Eric O never get a mention in your videos probly cos im from the God old U k love you vids, and your Mrs O and children are great, also Workshop cat, also your beautifull Dogs. Greeting fro John the 30 year mechanic Veteran of British Army we dont getany recognition or respect from our fellow British population Nor from our Goverment, anyway Eric bestwisehes from John reece.

  41. Avataaar/Circle Created with python_avatars Commomsense1234 Smith says:

    Those nuts came off like a Florida car. 😂😂👍🏻

  42. Avataaar/Circle Created with python_avatars John Flanagan says:

    not bad, didn't hear much (if any) "manufacturer" complaining..

  43. Avataaar/Circle Created with python_avatars Tony Lester says:

    Great 2 for tuesday….

  44. Avataaar/Circle Created with python_avatars Burning Gears Diesel and Auto Repair says:

    Great video! Always fun to watch the work and listen to running commentary 😅

  45. Avataaar/Circle Created with python_avatars Corbett Knowles says:

    I'm been doing this last 10 years and I haven't ever seen one stuck open or electrically. Magnetically yes.

  46. Avataaar/Circle Created with python_avatars suntzuwu says:

    I'm seriously considering moving to Avoca NY. ( or a free state within driving range ).