►► Check out my step by step video guides to cleaning carburetors -www.themotorcyclemd.com/pro-carb-cleans

As a long-time mechanic it was a pleasure to watch a much younger mechanic work his magic. The video was well explained and thorough. Thanks for sharing your knowledge with others.

Young man I've been in motorcycle business half my life and you remind me of just a small few that has the enjoyment from performing such a simple operation for everyone to understand like a pro. No music no clattering on about how your day went with your dog and you got a flat tire on the way home just straight to hey pay attention grasshopper pause the video any section of the way if you get lost you're right there with us thank you your career is for us to enjoy the training thank you

This is the best video I've found on KZfaq for proper adjustment of the fuel mixture after changing jets, pipes or airbox. Plus, you are an excellent teacher.

Man this is honestly one of the best videos I have seen on KZfaq to date. I was having problems with my VT750, watched this, and within 25 minutes the problem was solved… so simply.. thank you!

Cody, Just applied your video Deceleration Backfire: Tuning your carburetor. I have the same exact 2003 Honda VT750 you did the video on... It took care of the problem and actually sounds great. I just want to thank you for taking the time and posting it. I followed it to the T and all went well. Thanks again. John

Thanks for having the balls to try imitating the engine sound. It actually helped understanding. ❤️

Whats up Cody, just wanted to thank you. These videos have enabled me to bring my father's bike back to life, and I'm looking forward to getting it fine tuned. Keep up the good work bro.

Hi there Doc, well I been wrenching for over 50 years taught 9 and you did a great job explaining the mixture adjustments and getting it done. I always have used dorky sounds to explain the engine working or asak for them in diagnosing a customer complaint. Keep up the good work!!!

I watched this when you first put it out and got my bike running 100 times better. And now, I'll occasionally re-watch this vid to remind myself how to make these adjustments if I need to. Thanks Cody. U da man!

Good stage presence and "flow" to the video with no wasted moves. Clearly visible view on each part of the procedure with accurate and concise explanations and even a little theory behind it all. This video is a solid 10 on the Richter scale. I already knew it all and worked at a couple of shops in the past actually. . I watched it because I'm planning to do a KZfaq demonstration myself.....if I can do one 1/2 as good as he did on this one, I'll consider it an unmitigated success!!

I've been a mechanic all my life and have been taught this before but I have thoroughly enjoyed these videos. Learning and doing mechanic work is what I love to do. I am going to play with my KLR 650 now which pops on decel and am fairly certain I have it to lean. I have taken out the baffle at the end of the exhaust so it doesn't sound like a lawn mower but still have catalytic converters and did not want to risk a problem with them. Anyway thanks for the teaching.

Just bought a vt750 a month ago. I'm having this exact deceleration backfire you describe. Thank you so much for this in-depth video! Now I have confidence in digging into this myself.

That last minute of advice you gave is exactly what I needed to hear, your an excellent teacher brother.

Hey Cody, boy am I glad I found this video. I bet you saved me a bunch of money! I have an ‘06 Shadow Spirit and I just finished the reassembly and test drove the bike. Based on your procedure for removing the Welch plugs and adjusting the carb settings, I am very, very satisfied with the results. I bought the bike with V&H Straightshots but had a problem with backfire during deceleration. I didn’t know if the bike had been jetted and the only way to tell was to inspect the jets. I needn’t tell you what that entails but I really didn’t want to go there. After finding this video, I decided to duplicate what you demonstrated and it worked perfectly. Backfire is gone and the bike runs great. It even increased the idle just like the video and I was able to dial it back down. Thanks for a job WELL DONE!!!

now you solved my problem for my bike! Absolute must watch ladies and gentlemen!

So far you have helped out a lot. I have the 1979 Limited Edition CB750K that you did the carb sync on. I had removed the baffles to discover incredible power waiting. After restoring her in Spring 2021, I had a Vintage Motorcycle co, tune so to get it past inspection. Things were okay for about a week although some deceleration backfire.. Yesterday after highspeed driving on the highway for about 5 min's, the lean symptoms showed up. I had enriched the mixtures since before. Still some deceleration backfire - so further enriched. and deceleration backfire became minimized. But after exiting the highway yesterday, when winding down to a stop, engine shut off, and idle simply would not sustain, and would need to rev her. It seemed like a manifold leak, and also the Carb No 1 was having loud backfires during idle suddenly. After limping home, with engine case @ 240 F Temp, and after cooing down, drained float boil one and injected carb cleaner directly into the Boil via its drain hole. This improved things somewhat. The Manifold Boots had been replaced, and new hose clamps tight for a screw driver but not firm for a ratchet. Just got back after some further testing, Im using STP Ultra to clean the fuel/ carb systems. Just a little back fire to watch on Cylinder 1 - Thanks again for your help and for reading this -

Brother I love your videos!!! Even if I've done something before I still see if you have a video on it cause almost every one I've watched I learned something new. You have no idea how much help you have been for me thank you soooooo much. And this video spot on popped out the plugs did a cpl adjustments and BAM...my idol is smoothed out and no more backfiring, throttle response is better and it drops right back down to smooth even idol. My Bike and I thank you tons!!!! Keep up the videos you are a life saver for guys like me.

Perfect demonstration of proper technique. Thank you for sharing this knowledge with the rest of the world!! I'm going to apply this technique to my vstar 650 tomorrow!

This is what I have been looking for the last few days. Just got my carbs put back in after a clean and looking for an example on how to do this. Awesome

i owe you an adult drink mixture or 2 for all the knowledge you've shared, and time, money and sanity you've saved me

Amazing video, just what I needed for my Vstar. Thanks! EDIT - I just did what you instructed and my Vstar now runs like a dream. All back firing gone. Thanks!

Your videos are helping me mid my vtx 1300, and restore my cm450a and my cb650 nighthawk. Thanks for the info, man. Hopefully this will help me get the x jet done and carb tuned successfully. 🤙🏼

Been having issues getting my 75 cb 750 running clean. This and other video on syncing carbs has been more helpful than any other videos. And I've watched them all.

I worked at a shop and my boss had a neat trick for pulling caps. He would drill a pilot hole like you did in the center. He then would take a wood screw that he ground just a little of the sharp tip off. He would thread into pilot hole in cap. Take a small slide hammer with a claw foot and pop it out in one slide. Anyways, thought you might like the info. Something to try out maybe. Great video, on point. Thank you.

I bought a 03 shadow with cobra pipes and after market air filter. Kid said it had been jetted. Back firing like crazy. He said its always done that. Thanks to your video this old timer is good to go. Keep them coming. Thanks so much.

With a long drill bit i was able to do this with my tank and throttle still on. thank you for your video it gave me the curage to do it myself and my 05 shadow sabre 1100 has never sounded so good.

Cody . Man you are awesome brother. You and your videos have helped me a lot. Just want to say thank you and I appreciate you making these videos.

I've got a 2000 Honda Shadow Sabre 1100cc, and thanks to this video, I was able to enrich its lean mixture and increase the idle speed. It's running much smoother. Much appreciated MD! My next step will be to install a K&N high-flow air filter.

Great Video! I have had the similar problem with my 1982 750 Maxim. I'm going to start re-adjusting the screws and see what happens. Thanks for your time!

I've watched a lot of videos in the last few days and by far this is the best I've seen yet, great work my friend

Actually seeing the carbies getting a tune up and hearing the result, is brilliant thank you

This was really a great video. It's the actual management of the circuits working together you covered and that is on the fly super advise. Thankyou so much!

Thanks a million. Tuned my carb in under 10 minutes. Great video man!

Holy hell, this might just be the best thing I've ever stumbled onto on KZfaq. I've got a 2000 VT750 ACE that the PO swapped pipes on and the idle is lumpy, it can stumble a bit when you first tip in and the decel backfiring is amazing - guess that's why Cobra calls it a shotgun exhaust. It's still pretty cold here in Chicago, but once I can comfortably sit in the driveway and tinker, this is going to have to be my first step. Now if I could just get you to stop by and double check my work (and maybe go over my NT700, too) I'd be in hog heaven.

Just wanted you to know, I did take your advise seriously the other day about having screws turned out to far. So today... I took both Pilot screws and turn them both in till I could feel them seat. Did that two times ever so lightly. Then backed each screw out 3 1/2 turns. With cold start I pulled choke out and bike started right up running nice and smooth at fast idle. Pushed choke all the way back in. Motor idled back down running smoothly. Then turned idle screw down, went for a short ride decelerating in first gear and guest what? No more back fire!! Yea I feel so blessed right now. Thank you soooooo much!

Just finished an intake, jet screw, and exhaust on a Coleman Mini Bike lol. Ran amazing at first, then started having very little power and deceleration backfire. The setups a little different with my carb, but your vocal demonstrations told me exactly how to tune it in. I've got an adjustable idle screw and mix screw (196cc Honda Clone 6.5), I did notice the throttle has to be cranked before the engine does anything

Thank you man, it was extremely simple and informative!

Good stuff man! Thank you kindly for sharing your knowledge with us, and teaching an old dog a new trick.

You're a great teacher. You explain the hows and the whys equally well. This helped me so much. Thanks!

I just Wanted to say thank you so much for this video. I have a 2000 Yamaha R1 and have been struggling with the exact symptoms you talked about with backfires while idling and Narly decel pops since the ex-up delete and Graves ais delete. I'm gonna adjust my pilots tomorrow and make sure there all still in sync and then RIDE!!!!! So thank you again for all the pro tips and help on clear step by step instructions on your videos.. 🤙✌️

Best video I have ever seen on this procedure. Well done. Thanks for taking your time to make the video!

Subbing just because you're the first KZfaq mechanic that made the "light" click for me. Thank you, agree with everyone else, you're a very good teacher, and the silly sounds DID help.

Did this on my 98 Honda Aero thanks to this video. Great explanation. Worked like a charm! Thanks!!!

This is the exact video I’ve been looking for. Awesome and clear

Excellent explanation...! You have open my eyes. :) best wishes for you! Straight from Warsaw in Poland!

EXCELLENT video Cody! GREAT information, enjoyed it thoroughly. Ride On!

Thank you man ! I’ve had a backfire for over a year now hopefully this helps me out tomorrow !

Hey Cody {PonyTail} Brother of 2down.. I've been riding all my life 8 on 3 speed 13 YZ490 ,street bikes beating up the trails 23 Harleys sporty,Heritage street to now vt750 was my RIP Dad passed to me I'm no mechanic and You all guys have been Very much helping me work on..Thanks Again keep'em coming

You're a frigging genius mate. Wish I had a quater of your knowledge. Thanks for sharing it.

With all the videos I've watched for research, this one is the most understandable. I will work as you advise, man! Thanks!!

Great video. I was having problems with my shadow. All fix now thank you man you saved my bike!!!!

Great demo of tuning the carbs and explaining the desired result Plus... the tune on that 750 sounds immaculate

Thank you so much, I watched two of your videos today and it helped me understand what's going on and hopefully I will be able to fix my decel popping. Cheers!

The BEST carb explanation on KZfaq! Subscribed

I agree, this is the best video about adjusting your carb. Thanks bro

Ive got to say cody,its a good video. So much detail explained.good job man, had same issues 1 clynder not working as wll. I will go to the carb first. Thanks man

Very informative video, doing this to my 05' VT750 this weekend! Thank you for this

This guy is a god!! I'm running aftermarket Vance Hines Longshot exhaust and ever since my bike has been running lean and I never knew it till I watched this video. 97 shadow 1100. Couldn't thank this man enough. I been running like that for 2yrs now.

You dont sound like a dork you sound like a genius, i have just fired up a bike carbed car for first time and gona have a go 2moro gettin it running right, the tip on throttle linkage was a big help in gettimg my car pedal returning right and your vocal guide of what the revs are doing are so helpful, i struggle with understanding written info in many ways but you make total sense, thanks braaah!

It’s a great pleasure watching a great motorcycle mechanic

Thank you for the video and education. I'm working on vt1100c carbs now and this has been very helpful.

Im a master HVAC mechanic and I can tell you, This Dude is a really good mechanic! Take note.

This was an amazing video thank you very much! I have a a Yamaha Vstar 1100. I took the muffler off, so I'm running straight pipes, the deceleration backfires are ungodly loud. I knew it was lean but didn't know how to properly deal with it. This will be my project tomorrow. You sir have a new subscriber

Awesome Mathew improved my performance 100% you are the man

great video im sold after reading just a couple coments . cant waite to try this i have 03 shadow spirit 750 having same problem pipes were cut baffles gone same air box popping on deceleration exspained in detail n right to the point and im glad i did buy the rejet b.s. kit thanks

I just got my first bike last week. Honda shadow 1100. Thing runs great but I really enjoy these vids! The moment you did that first half turn and got the idle sounding much better was like magic to me lmao

Literally the firsy carb tune video that explains the air mixture ty god

After a few videos watched, this one earned my sub!! Well done.

Great tip to make it run "better than out of the box"!

THANK YOU CODY!!! Awesome video. I know how to deal with things now. I'm stoked! Super cool of you, man!

Realllly easy to understand... you're a reallly good teacher!!! Thank you verrrrrry much!

Thanks for this great video and all the explanations. I have a 2006 Honda Shadow Spirit - have some acceleration backfire, and at idle as well just like in this video. Now I at least know where to start next weekend!

Got the same problem on my virago. Gonna try to adjust the mixture. Thanks for the video!

Just picked up a 99 with the same issue today for 1500 bucks thanks for the assistance

Thank you compadre! ✊ Who knows how much money you save me. I had the exact same problem. it's fixed now. 😎👍👍😎

Dude thats a great video . explained so well . I struggle with the cable adjustment i like how you explained it will put it to practice

I really appreciate your videos. Very informative and to the point

dude, holy shit... Where have your videos been my whole life? How did I just now find your channel? You need to be known, Subscribed!

Good video! I own 25 bikes and have done this with every one with good results. I truly believe it is the ethenol in the fuel now that is causing the lean idle mixture condition.

You did a superb job man. It made so much sense.

Fantastic video. Im doing this to cure my popping on decceleration. Thank you.

Great video..have the same sounding popping in carb and backfire on newly aquired 1985 sr500.Found the fuel mixture screw (near engine ) so will start at 2 turns out and go from there..

I just want to thank you for your video it's the reason my Yamaha r1 is now fixed. the previous owner for some reason had all the fuel mixture screws closed all the way in I didn't noticed and thought the carb was clogged I took the carb off multiple times to clean and couldn't figure out why it was running so lean the bike popped on deceleration and ran like poop after your video it now runs like a beast and no popping

While you may think you sounded like a dork, you accurately described exactly what my bike was doing after I fiddled with the pilot screw. (The taking longer to return to idle problem) So now I know it is running lean and I need to open it more. (I have the "D" head screw on my carb so it's not so easy to adjust.) Thanks for your time and making this and all the other videos. Kudos.

What up Cody, Watched all your videos regarding carburation and jetting. I've been bought up on 2 strokes 😁. I'd like to say thankyou dude for guiding me to set up my Honda cbr1000f , she's now running like a Rolex watch now😉💪. Best regards dude , Rich in the UK 🏴󠁧󠁢󠁥󠁮󠁧󠁿🍺👍

Good video.. Video tip: You can "soften" the chest light by placing a layer of self-sticking Glad Press 'n Seal over the light. This will spread the light more evenly and reduce the glare off the shiny bits.. and it's easily removed...

BRO! replacing the thermostat this week to get my bike back up an running, and was contemplating messing with the A/F mixture, gonna do it for sure. still a little nervous about drilling into the carbs but i should be able able to pull it off. looking forward to my "new to me" bike running well again.

I can't even tell for how long I've been searching for this idle mixture tutorial. My XRV had issues, and no one seem to know how to set it properly, previous owner had gunk in tank and broken vacum line so he though " Im gonna solve this with totally messing idle mix and carb sinch." well didnt work so he sold the bike, i noticed broken vacum tube right away when buying. so i fixed that, thend cleaned tank, and after that bike started runnig better, but weirdly at idle, so i tried to set these so they are the same at both carbs. Now I know how to identify the sweet spot so I'll get to tuning. :) thanks!

Bro, I just did this on my bike and si far so good. It already idles muuuch better!

Hi there,thank you for sharing & explaining your magic trick with the carburetor (Welsh Plug) I had no idea about that,I've always wondered what that is & why it's there,i enjoy your fab videos,thank you so much friend 😊😊😊

The jet kit changed the main from 112 to 118 and slow jet from 35 to 38. Who knows if larger or smaller due to scale differences. Stock needle with a washer to lift. no drilling done. I rode and put the choke 2/3 closed and it improved, minimal popping. Ill add another washer to the needles and turn them out and test with service tach to get higher idle. I have an inline fuel filter with a clear outer cylinder so I can see it is getting fuel. I checked a plug and insulator was white, electrode dark. I do have the K&N air filter in stock air box, so I am getting more air so, definetly need more fuel. I rebuild the petcock recently so it seems to be ok. Love the thumbnail! That is my bike. That oil line under #2 make adjusting it a PITA. I really appreciate your time and expertise. Ken

I totally love the video! Very informative. I have implemented your suggestions with good effect. Thanks Any word on what might cause acceleration pop through the exhaust?

WELL AS USUAL ANOTHER PERFECTLY EXPLAINED VIDEO FROM CODY THE GENIUS OF THE POWERSPORTS INDUSTRY. THOSE WELCH PLUGS SEEM LIKE THEY WOULD BE TOUGH TO REMOVE. WELL TOUGH FOR THE NORMAL HUMAN. HAHAHA, BUT WHENEVER I WATCH A CODY VIDEO THINGS ALWAYS SEEM TO GO SMOOTHLY. I KNOW YOU ARE AS GOOD AS YOU ARE SIMPLY BY KNOWING YOUR CRAFT. I'm SURE YOU DIDN'T BECOME THE MOTORCYCLE GURU YOU ARE OVERNIGHT. JUST A. PERFECT VIDEO FOR THOSE NEEDING TO KNOW HOW TO. ADJUST THE AIR/FUEL MIXTURE ON THEIR BIKE. EVERY QUESTION A PERSON MIGHT HAVE IS COMPLETELY ANSWERED IN THIS VIDEO. AWESOME JOB CODY KEEP UP THE GREAT VIDEOS BECAUSE WE ARE LOVING THEM. THANKS BUDDY!!!

Thank you bro. It really helps how you explain each step.

You are a Genius...thank you so very much . God Speed to you and all you love . Thank you -Michael Cunha

Hi there,you can certainly work magic on carburetor's ,that was serious tuning,I've never seen anything as advanced as that ,WoW well done & Excellent Knowledge friend😊😊😊

Great video ! I enjoyed watching it !

OMG! You are the man!!! Thank you so much! Factory had my air/fuel mixture screw only a half turn out then covered it up with the Welch plug. Absolutely no reason to apologize for sounding like a dork with the engine idle/rev sound effects. When I rev it takes a while to come back down. Now I know that's too lean, will open up the mix screw some more so it drops down faster. Thanks for showing me how to tune my bike. Performance 100% improved and will only get better with further adjustment. Feel bad for the guy who owned the bike for 13 yrs and didn't know about that welch plug. I'll bet that bike has always run like garbage until now.

Awesome video, thanks! That really cleared it up for me, my bikes are running too lean. Tomorrow is going to be a good day. Subscribed.