We're glad the spark plug our Tech Department suggested fixed the issue. Starting at the end of 2023 all DuroMax generators are now assembled with NGK 7131 BPR6ES Nickel Spark Plugs.
Man, this is a sight for sore eyes. Thank you for posting this Angrybeard. I just cracked open the box on this model, which I ordered over a year ago. Crazy backfiring on propane starts, fine on petrol. Can't wait to buy the plug and install it. Thank you, wish me luck . . . .
Ok, well now I've watched the whole video. I'll see if my stepper motor is broke up. If you're seeing this, Angrybeard (Chris?), I don't have a tenth of your mechanical skills. Should I check that slide you referenced at the end of the video for uneven play, to confirm whether I need to order one? Also, good call pulling the plug (no pun intended) on that last "experiment". Yer buddy owes you a beer my man. Thanks again for posting this, I'd be down all kinds of rabbit holes without this.
@@Carricknagavna as long as the backfiring didn't ruin the electric choke on your carburetor. You'll be fine after the spark plug install. Let me know how it goes..
@@angrybeard4673, quick update: got the recommended sparky and now it runs on propane! Who'd a thunk it, man? Thank you again! But DuroMax: a spark plug, really? I wonder whether the guy who suggested the original plug is still there. I'm not dead sure yet the gear teeth in the stepper motor aren't compromised - the choke feels ok to me by touch, although it requires adjustment shortly after starting on propane or it punks out (maybe that's normal). In any event great video and saved me all kinds of grief. Much appreciated.
Having the same issue have replaced the spark plug just waiting on a back ordered carburetor. Thanks to reassuring me with this video I feel confident with the new spark plug and carb my problem will be solved 🎉
@@bengriffin2283 I hope you have received your carburetor. Probably backorder because they're having to send them out to everyone who bought a generator. Hopefully your up and running!!!!
@@howardrfrank that's great to hear. Thanks for the feedback. I hate that everyone is having this issue. It's an induced problem. Induced by the decision to use a cheap inferior sparkplug rather than a proven performer. All to save a few bucks I assume. Nobody would've noticed an extra 5 dollars added to the price of the generator and they gladly would've paid it to avoid the aggrevation of this shitty plug. So annoying! Extra annoying in my case because it took out the stepper motor on 3 carburetors as I recall. Unbelievable. So they did cut corners and go cheap with this generator but it's still a good generator. Goodluck to you and thanks for reaching out
Weird how the automatic choke solution used to be a flap in the fan's air flow that would overcome a spring holding the choke closed. Or a bimetallic strip that was calibrated for the temperature. Know how many of those I've seen fail? Zero.
Thank you Sir, I just confirmed that the backfiring killed the stepper motor on mine as you showed in the video. I don't really have faith in this generator anymore as it seems it's reliability depends on some tiny, plastic teeth... Will be returning to Home Depot for another brand at this point, very disappointing.
Have the same generator. It started up first time for me on propane. I never touched anything on it. I can’t believe that a spark plug would make that difference.
@@jimmcc2543 Yea. On gas. You can get away with a junk spark plug more often than not. On propane. Not so much. Propane is less volatile than gasoline. It needs a good hot and healthy spark. Which was unavailable with this junk trash plug. Never heard of an LG spark plug. But that was the fix.
@@videoforgeeks yes. As I recall it does. However the backfire issue which is the central theme of this video. Is caused by and resolved by the spark plug. The backfire that occurs has nothing to do with idle control.
Totally agree. I'm working on converting one of these replacement carburetors over to a manual set up. Trying to figure it out now. I'll make it into a video once I get it done.
We're glad the spark plug our Tech Department suggested fixed the issue. Starting at the end of 2023 all DuroMax generators are now assembled with NGK 7131 BPR6ES Nickel Spark Plugs.
I just purchased one from Home Depot, it's backfiring like crazy on propane and the spark plug is Torch F6TC....
Man, this is a sight for sore eyes. Thank you for posting this Angrybeard. I just cracked open the box on this model, which I ordered over a year ago. Crazy backfiring on propane starts, fine on petrol. Can't wait to buy the plug and install it. Thank you, wish me luck . . . .
Ok, well now I've watched the whole video. I'll see if my stepper motor is broke up. If you're seeing this, Angrybeard (Chris?), I don't have a tenth of your mechanical skills. Should I check that slide you referenced at the end of the video for uneven play, to confirm whether I need to order one? Also, good call pulling the plug (no pun intended) on that last "experiment". Yer buddy owes you a beer my man. Thanks again for posting this, I'd be down all kinds of rabbit holes without this.
@@Carricknagavna as long as the backfiring didn't ruin the electric choke on your carburetor. You'll be fine after the spark plug install. Let me know how it goes..
@@angrybeard4673 On order now, will do. Thanks again for posting this, good grief.
@@angrybeard4673, quick update: got the recommended sparky and now it runs on propane! Who'd a thunk it, man? Thank you again!
But DuroMax: a spark plug, really? I wonder whether the guy who suggested the original plug is still there. I'm not dead sure yet the gear teeth in the stepper motor aren't compromised - the choke feels ok to me by touch, although it requires adjustment shortly after starting on propane or it punks out (maybe that's normal).
In any event great video and saved me all kinds of grief. Much appreciated.
Having the same issue have replaced the spark plug just waiting on a back ordered carburetor. Thanks to reassuring me with this video I feel confident with the new spark plug and carb my problem will be solved 🎉
@@bengriffin2283 I hope you have received your carburetor. Probably backorder because they're having to send them out to everyone who bought a generator. Hopefully your up and running!!!!
You’re video was so helpful to me and my husband; thank you
@@itsjadesteph I'm glad it helped and hopefully your all squared away now.
@@angrybeard4673 replaced the spark plug and got our generator working during the hurricane winds!
Thank you, thank you, thank you. I ordered and replaced the sparkplug this morning amd it started up on propane the first time without backfiring!!!
@@howardrfrank that's great to hear. Thanks for the feedback. I hate that everyone is having this issue. It's an induced problem. Induced by the decision to use a cheap inferior sparkplug rather than a proven performer. All to save a few bucks I assume. Nobody would've noticed an extra 5 dollars added to the price of the generator and they gladly would've paid it to avoid the aggrevation of this shitty plug. So annoying! Extra annoying in my case because it took out the stepper motor on 3 carburetors as I recall. Unbelievable. So they did cut corners and go cheap with this generator but it's still a good generator. Goodluck to you and thanks for reaching out
Weird how the automatic choke solution used to be a flap in the fan's air flow that would overcome a spring holding the choke closed. Or a bimetallic strip that was calibrated for the temperature. Know how many of those I've seen fail? Zero.
Thank you Sir, I just confirmed that the backfiring killed the stepper motor on mine as you showed in the video. I don't really have faith in this generator anymore as it seems it's reliability depends on some tiny, plastic teeth... Will be returning to Home Depot for another brand at this point, very disappointing.
I hear ya. I get it.
Have the same generator. It started up first time for me on propane. I never touched anything on it. I can’t believe that a spark plug would make that difference.
@@jimmcc2543 Yea. On gas. You can get away with a junk spark plug more often than not. On propane. Not so much. Propane is less volatile than gasoline. It needs a good hot and healthy spark. Which was unavailable with this junk trash plug. Never heard of an LG spark plug. But that was the fix.
Doesn't it say in the manual that you cannot use idle control when using propane and only when using gas?
@@videoforgeeks yes. As I recall it does. However the backfire issue which is the central theme of this video. Is caused by and resolved by the spark plug. The backfire that occurs has nothing to do with idle control.
Sitting in the middle of hurricane helene with a bad spark plug. :-(
@@briantrerice5444 Man, I hate that
Shit worked for me man. Thanks
@@needlepointrug Excellent ! I'm glad to hear it!!!!!!
“Fucking Hell”…..then sends it 😅
Coincidence.
Change your sparkplug to NGK
@@ljquanstrom you should've watched the video
having the choke electronic is dumb anyways, make it like plenty of small engines have been where its attached to the governor and throttle assembly
Totally agree. I'm working on converting one of these replacement carburetors over to a manual set up. Trying to figure it out now. I'll make it into a video once I get it done.
@@angrybeard4673 Please!!!
Also - can you post a picture of the back of the stepper motor (If that's where the stripped gear sits)
LG Chinese junk spark plug