Deceleration Backfire: Easy Carb Tuning
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- Опубліковано 28 лип 2016
- Check out how easy it is to tune your carbs to eliminate deceleration backfire.
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A 99 honda magna has 4 carburetors. Is this possible on 4 carbs? Can u get to all 4 plugs?
Sounds like it's starving for air
Good looking bike but I'm not a fan of those style pipes. They make nearly every bike no matter what it is sound like a 250 rebel
Sounds like new.
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.
Tubby Greyed Thank you for the encouragement/compliments Brother. Speaking the language of fellow riders and techs allows me to bring more value to viewers. 🤙
Tubby: My words sir!
Love your presentation...by far the best explanation of the way the machine works i have ever heard.I recently acquired a 750 shadow spirit and am hungry for advice.This was spot-on advice for me...Thank You!!
Kool guy man yes great video
Great vid, you explain the adjustments well. The vid can help people who need to get their bike running correctly. Thanks. Subscribed.
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
Thanks for having the balls to try imitating the engine sound. It actually helped understanding. ❤️
It’s a big thing music people do too with certain sounds 😉🤷♂️
Rawr
Man this is honestly one of the best videos I have seen on UA-cam to date. I was having problems with my VT750, watched this, and within 25 minutes the problem was solved… so simply.. thank you!
👌🏻👌🏻👌🏻
This is the best video I've found on UA-cam for proper adjustment of the fuel mixture after changing jets, pipes or airbox. Plus, you are an excellent teacher.
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
John Masell Hey John, so glad that you were able to apply this video directly to your own bike! It is very satisfying and encouraging to hear this!
Cheers brother!
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
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 UA-cam demonstration myself.....if I can do one 1/2 as good as he did on this one, I'll consider it an unmitigated success!!
That means a lot man thank you!
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!
+JBHobbyist That’s what I’m talking about man!!! Nice job 🤙
Im a master HVAC mechanic and I can tell you, This Dude is a really good mechanic! Take note.
Im not trying to be rude im actually curious what is an HVAC mechanic.
Josh Head Heating Ventilation Air Conditioning Refrigeration
@@larryclarke7793 oh ok cool. thanks
cool, tell me more about how gasoline engines are similar to air conditioning again?
@@keeganlangford5580 Well, sarcastically, I'd say "mechanical" ! ! ! !
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.
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!
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!!!
That last minute of advice you gave is exactly what I needed to hear, your an excellent teacher brother.
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 did this on a yamaha xv250 and worked perfect. Drilled enough of the hole to allow a wood screw to grab, then with a set of pliers I wiggled it out. Took all of 5 mins to do!
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.
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!!!
Don’t you just love it when a solid plan works out?! So glad you got the result you wanted man. Enjoy it brother!
now you solved my problem for my bike! Absolute must watch ladies and gentlemen!
Thanks a million. Tuned my carb in under 10 minutes. Great video man!
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!
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
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.
Holy hell, this might just be the best thing I've ever stumbled onto on UA-cam. 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.
Kelly R Johnson I wonder if the pilot jet is too small?
@@CIarkNova Probably so. I did end up drilling out the plugs and fiddling with the air mix - the bike rides just fine but still backfires on decel and doesn't want to rev without any load. I'll be yanking plugs and replacing them soon.
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.
Subbing just because you're the first UA-cam 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.
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.
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.
Wow thank you so much for this comment!
Thank you man, it was extremely simple and informative!
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
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.
The BEST carb explanation on UA-cam! Subscribed
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!
Good stuff man! Thank you kindly for sharing your knowledge with us, and teaching an old dog a new trick.
This is the exact video I’ve been looking for. Awesome and clear
EXCELLENT video Cody! GREAT information, enjoyed it thoroughly. Ride On!
Best video I have ever seen on this procedure. Well done.
Thanks for taking your time to make the video!
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 -
Did this on my 98 Honda Aero thanks to this video. Great explanation. Worked like a charm! Thanks!!!
Steve Goodwin love hearing this! 🤙🤙
You're a frigging genius mate. Wish I had a quater of your knowledge. Thanks for sharing it.
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!
+idkman 🤙🤙
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!
It’s a great pleasure watching a great motorcycle mechanic
Excellent explanation...! You have open my eyes. :) best wishes for you! Straight from Warsaw in Poland!
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.
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 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!
Previous owner had destroyed the screws heads and any movement i could achieved didnt do much so switched to a cbr600 set to have them fill the floats then conitune to piss fuel over the starter out the bottom haha i think theres some double back hoses missing, more rnd might be time to invest in a refurbished set, have you ever tuned a set on a car engine? That would be a sick video seems less common knowledge more only set people know how, the principle seems the same, but be cool to learn the difference in application
@@flybikesbmx6242 cars are a little different but I can help. Feel free to contact me. I'm an old car wiz man. When I grew up we fixed our own and I'm more than happy to pass on what I know.
Great video. I was having problems with my shadow. All fix now thank you man you saved my bike!!!!
I agree, this is the best video about adjusting your carb. Thanks bro
+Anatolie Murug Thank you!!
After a few videos watched, this one earned my sub!! Well done.
I agree
Awesome Mathew improved my performance 100% you are the man
You don't sound like a dork, it's a beautiful language, the linguistic equivalent to "a picture says a thousand words", sincerely, thank you for this video.
+bnnken Thank you! Glad you enjoyed the video!
Same as other posters, I also could NOT get my gs500 twin running right, couldn't find help with gs500 specifically, but within 5 minutes of watching this I had my idle perfect and no longer hanging and popping.
I dont care what you sound like. A smart guy will appreciate the help.
Realllly easy to understand... you're a reallly good teacher!!! Thank you verrrrrry much!
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.
Hey Nicholas, I have a '96 Shadow 1100 Shadow as well. So was it just those two screws which solved your issue? I'm getting slight backfiring
You're a great teacher. You explain the hows and the whys equally well. This helped me so much. Thanks!
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
Great demo of tuning the carbs and explaining the desired result
Plus... the tune on that 750 sounds immaculate
THANK YOU CODY!!! Awesome video. I know how to deal with things now. I'm stoked! Super cool of you, man!
🤙🏻🤙🏻
Thank you man ! I’ve had a backfire for over a year now hopefully this helps me out tomorrow !
Thank you for the video and education. I'm working on vt1100c carbs now and this has been very helpful.
Oldguydoingthings
I'm about to work on the same carb on my 97 Honda Shadow Spirit. I took the bike out of storage, and the crankcase filled with gas. I think I have a stuck float. I'll clean it all up, and apply the adjustments in this vid and hopefully be all set.
I learned a couple of lessons that might be helpful. The major reasons my carbs gunked up was due to the petcock leaking continuously into the carbs while turned to off position. Had to buy a new one. Also, i had been using gas with some ethanol in it. i now totally avoid ethanol contaminated fuel in bike and cars generators, etc.
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
Just picked up a 99 with the same issue today for 1500 bucks thanks for the assistance
With all the videos I've watched for research, this one is the most understandable. I will work as you advise, man! Thanks!!
Thank you compadre! ✊
Who knows how much money you save me.
I had the exact same problem. it's fixed now. 😎👍👍😎
Literally the firsy carb tune video that explains the air mixture ty god
You did a superb job man. It made so much sense.
Great video ! I enjoyed watching it !
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!
Great tip to make it run "better than out of the box"!
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 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.. 🤙✌️
I really appreciate your videos. Very informative and to the point
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
+yulaw5110 Awesome man, glad I could help!🤙🤙
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.
aquaman0167 So glad I was able to "speak the language" in a way that makes sense! I think you hit the nail on the head with turning the mix out for the fix! 👌🤙
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
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!
+Andre Kadibelban Hope it cures the issue!
Fantastic video. Im doing this to cure my popping on decceleration. Thank you.
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
Yamir929 This is music to my ears! Great job for figuring it out brother. Glad this video was able to point you in the right direction! Be careful out there!
XworksTV Dude my 2000 R1 is running like poo. I'm now convinced this is my dilemma, based on your comment. I hope this solves the issue.
Bullock Wagon good luck it's an easy fix if it is just a turn of the screws in each carburetor
XworksTV I can't seem to locate the proper screws. Any chance you can send me a PM with a picture of the proper screws. The frame is all in my way haha.
Bullock Wagon there is one per carburetor it's on the bottom of each carburetor by the float bowl it's a copper Flathead screw
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!!!
You are a Genius...thank you so very much . God Speed to you and all you love . Thank you
-Michael Cunha
Got the same problem on my virago. Gonna try to adjust the mixture. Thanks for the video!
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.
Scott Miller Nail on the head Scott! So easy and so practical!
i bought a '94 magna 750 that sounded just like that. this video got me goin again. you just fixed my throttle cable issue as well lol
Isaac Flanders Two birds with one stone?! That's what I'm talking about brother! 🤙🤙
Awesome vid man!!!
Likin your vids man! I can tell you really want to help a brother out! Your presentation speaks to me. Keep it up and keep um comin! I'm sub'ed
Best video you published.
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
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 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!
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 🏴🍺👍
Awesome job brother
You sir have received my first subscription
WHAHOO! Thanks!
Thank you bro. It really helps how you explain each step.
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.
Fantastic video! Thank you very much for the tips!