GMG smoking black?
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Thread: GMG smoking black?

  1. #1

    GMG smoking black?

    Has anyone on here ever had a problem with a Green Mountain grill smoking a very black, sooty smoke? I used to own one and sold it for that reason, and now my buddy who also owns one tells me he has the same issue. In fact, the truth of the story is I used to be a dealer and I sold him his grill. Mine did it from through time it was brand new, and it sounds like his has too. Cleaning the firebox makes no difference, the fans and auger are functioning normally, he has put a considerable amount of time into trying to track down the reason for the black smoke with no luck. In fact he has changed controllers and replaced the auger motor. He showed me some chicken he cooked recently and it had a really ugly dark grey / black color to it, which is something I remember as well - grey chicken, pork chops, even grey pizzas. We live at close to 4000' elevation and I'm convinced it's a combustion issue due to our thinner atmosphere. We've been considering running a switched jumper wire from an always-on power source to the fan wire and once the grill is up to temp and stabilized normally we would then turn the switch on so that the fan runs full time and the temp is controlled strictly by pellet feed like a Traeger. I'm not sure how well this would work, obviously it wouldn't hold within + or - 5 degrees like it does now, but if it maintained within 15 degrees up or down that would be as good as any Traeger and if the food was good it'd be a huge improvement anyway.

    Anybody ever hear of this issue, or have any input?
    Charmglow 4 burner gasser
    Traeger 075 with cold smoker attachment
    Large Big Green Egg
    1986 Weber 22.5" OTS black
    1880 Weber 22.5" 3 wheeler faded black
    1976 Weber 22.5" 3 wheeler chestnut (brownie)
    Weber 22.5" rotisserie ring
    Weber Jumbo Joe
    Weber Smokey Joe

  2. #2
    We have another member who recently received a GMG as a gift and is experiencing the very same thing.

    Check out this thread: New to pellets with a question


    Unfortunately, I've read several reports about this issue lately, and several unhappy customers. There are rumors that GMG is having issues with the Chinese made controllers. You and/or your friend should definitely contact GMG and get them involved in this.

    I hope for your friend's sake that GMG gets this straightened out soon!
    <><
    MAK 1 Star General #651 - 2014 Model
    former owner - MAK 1 Star General #171
    22.5" Weber Performer with Stoven Pellet Grill attachment
    27 + year old 22.5" Weber Kettle (still works fine)
    Modified Horizontal Offset Smoker - used mainly for cold smoking.

  3. #3
    Moderator scooter's Avatar
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    GMG pellets?


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  4. #4
    Yes on his. Made no difference on mine.
    Charmglow 4 burner gasser
    Traeger 075 with cold smoker attachment
    Large Big Green Egg
    1986 Weber 22.5" OTS black
    1880 Weber 22.5" 3 wheeler faded black
    1976 Weber 22.5" 3 wheeler chestnut (brownie)
    Weber 22.5" rotisserie ring
    Weber Jumbo Joe
    Weber Smokey Joe

  5. #5
    Problem solved. Saturday he ran a switched jumper wire from the power source where the cord attaches to the control to the power supply wire to the fan from the control. With the fan running full time instead of cycling on/off the grill still held temps well within acceptable range, really not too much different than stock, and the burn was clean. Three pork tenderloins turned out a beautiful mahogany caramel color instead of blackish grey. He's a happy camper today so if anyone else has a problem with grey food on a GMG they should try this very simple mod.
    Charmglow 4 burner gasser
    Traeger 075 with cold smoker attachment
    Large Big Green Egg
    1986 Weber 22.5" OTS black
    1880 Weber 22.5" 3 wheeler faded black
    1976 Weber 22.5" 3 wheeler chestnut (brownie)
    Weber 22.5" rotisserie ring
    Weber Jumbo Joe
    Weber Smokey Joe

  6. #6
    The fan actually was switching off instead of cycling to a slower speed? The fan should be running all the time or it makes sense that it would burn sooty smoke. That has to be a controller issue.
    <><
    MAK 1 Star General #651 - 2014 Model
    former owner - MAK 1 Star General #171
    22.5" Weber Performer with Stoven Pellet Grill attachment
    27 + year old 22.5" Weber Kettle (still works fine)
    Modified Horizontal Offset Smoker - used mainly for cold smoking.

  7. #7
    Nope, that's how they are designed. I should know I used to sell them. The fans are not variable speed. Rather, they run full time when below target temp, then once they hit target the auger shuts off and the fan pulses on and off rapidly. If the temp climbs more than 5 degrees above target the fan pulses slowly. I agree it is a recipe for soot but that's how they work.
    Charmglow 4 burner gasser
    Traeger 075 with cold smoker attachment
    Large Big Green Egg
    1986 Weber 22.5" OTS black
    1880 Weber 22.5" 3 wheeler faded black
    1976 Weber 22.5" 3 wheeler chestnut (brownie)
    Weber 22.5" rotisserie ring
    Weber Jumbo Joe
    Weber Smokey Joe

  8. #8
    Quote Originally Posted by Mmmmm View Post
    Problem solved. Saturday he ran a switched jumper wire from the power source where the cord attaches to the control to the power supply wire to the fan from the control. With the fan running full time instead of cycling on/off the grill still held temps well within acceptable range, really not too much different than stock, and the burn was clean. Three pork tenderloins turned out a beautiful mahogany caramel color instead of blackish grey. He's a happy camper today so if anyone else has a problem with grey food on a GMG they should try this very simple mod.
    Hello - I too am experiencing soot on foods - is it possible for you to supply a diagram of the modded wiring, I like the path you are on to solve this problem. As long as it does not damage the DB why not make it operate like a Traeger. My wife is pretty unhappy with this issue as our Traeger Jr does not have this problem and the fan runs full time.

  9. #9
    Administrator Big Poppa's Avatar
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    I know many people that love their GMG .....Actually we are going to be selling the little Davy Crockett anytime now. I have evaluated it and think it is the best portable option out there. My good friend Sterling Smith of Loot n Booty cooks his chicken on a davy crockett in competition and has several 180 perfect scores including a perfect score at the American Royal.

  10. #10
    Administrator Big Poppa's Avatar
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    Ok I just corresponded with Jason who is one of the owners of GMG. It is 5:48 in the morning and he is working. He will be signing on later to give a full explanation.

    The black smoke issue was a first generation on the Davy Crockett only. I has been addressed and fixed.

    There are so many great things about public forums but one of the negatives that I know from my guitar business is the customers going first to a forum and sometimes never to the companies customer service...then urban legends get started and what is usually a simple problem turns into something very bad and hard to fix. We have had two members complain about black soot and so now it is out there as a problem with the entire product line and brand. We have even suggested that there pellets may be the culprit.

    It is very hard to bring a product to the market...especially one sourced continents away. The best laid r and d and product testing just is never the same as getting them out there in the field. The measure of a good company is if they address the issue, fix it and take care of the customer. I believe that GMG has done the first two and will do the third provided they are contacted.

    The risk and reward is that there is a really nifty little portable pellet cooker out there that runs on three power sources and gets hot and has wifi,

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