Yamaha Big Bear Backfires, My 1990 big bear started to seriously backfire I thought it was the carburettor, I bought a new Carb and put it in, the back firing stopped immediately, works great until I speed up then it 2006 raptor 660 was backfiring and popping. The symptoms are erratic idle (I had to idle it up so it will), and when throttled up it backfires and pops out the intake box and the exhaust with a little smoke Audio tracks for some languages were automatically generated. it starts and idles (fairly fast) but when under load it dies out and backfires. It will rev in neutral fine and 1st gear, but I barely give it fuel in 2nd and it starts backfiring and guys behind me I'm reaching out for some collective wisdom on a puzzling issue I'm facing with my 1999 Yamaha Big Bear 350 4x4. Customer: I own a 1999 Yamaha 350 Big Bear ATV. We'll walk you through all the most common causes and fixes. Put in a new spark plug, the ATV Backfiring: The Two Common Causes Cause 1: Imbalanced Fuel-Air Mixture Normally, a well-balanced amount of air and fuel enters your 7 Common Problems With Your Yamaha Big Bear 350 Did you know that Yamaha big bear 350 was introduced into the market by the Yamaha brand in 1987? Hi, I have a 1995 Big Bear 350 4x4. Lean running Discover solutions to common Yamaha Big Bear 400 problems, like the carburetor, electrical, and starter issues, to keep your quad bike running Yamaha - 2002 big bear 400 backfire on deceleration - So I've had this issue for over a year. If you are experiencing backfiring through the carburetor and exhaust on your Yamaha Big Bear 400, it's recommended to thoroughly inspect and Explore Yamaha Big Bear 350 Common Problems and find effective solutions to keep your ATV running smoothly and reliably. Nobody enjoys experiencing mechanical problems with their You are riding your ATV and you heard a sudden “pop”; you get worried. Six months ago it ran good. I've gone through a comprehensive CDI teasted bad and was replaced with new, it ran fine for about 10 minutes then started acting like it was running out of gas, main jet was plugged so I had carb rebuilt and replaced manifold I took apart the carb and soaked it in carb cleaner, Removed gas tank drained and refilled. 6K views 16 replies 7 participants last post by sjohns4179 Feb 6, 2024 Yamaha Big bear 350, just rebuilt carb, only runs well when choke is on Jump to Latest 12K views 19 replies 6 participants last post by BigBearJuice Dec 6, 2022 B 95 big bear backfire at idle runs smooth above idle also i had brake problem also if he has handgaurds make sure - Yamaha 1995 YZF 750 R question Motorcycles, Snowmobiles, Go-Carts, Motorized Bikes, ATVs, Electric Mobility Scooters and Golf Carts - 2000 Big Bear won't start backfires - Hi, I have a 2000 Big Bear 400. Replaced starter set for choke As I understand the issue you're encountering with your Yamaha Big Bear 400, you've replaced the carburetor, coil, stator, and spark plug, and performed a full service. Just put on rebuild carb will start with choke on but will not ideal When I give it gas it starts to back fire??????? When I stab the throttle all the way from an idle, it bogs down, backfires a bit and wants to die. It’s just that your ATV is backfiring. So here you go! Yamaha - Big Bear is running bad, need help - I have a big bear that isn't running right and was wondering if yall could help me out. Diagnosing Yamaha A video tutorial on removing the carburetor from a Yamaha Big Bear 400 and providing helpful technical tips. Now, all it does is backfire out of the carburetor with flames and everything. It'll idle fine and rev up with the choke on but without the choke when you give it throttle it dies out if your ATV backfires, it means the engine gets more fuel than air to make a perfect mixture to perform the engine cycle. I have tried everything in the world! It just I have a 1997 Yamaha 350 Wolverine YMF350FXJ. I completely cleaned the carb and changed the plug and still didnt help. Let me tell you a little about me. Ran decent at first then started to rev up one day after riding in thick brush. Took carb apart and cleaned, replaced float needle valve, carb was actually immaculate! Cleaned anyway. Here, you will also find The Yamaha Big Bear 350 is a well-known and celebrated all-terrain vehicle (ATV) that was first introduced in 1987. Big Bear 350 cranks but doesn't start without some help Jump to Latest 21K views 9 replies 3 participants last post by zeekstern Sep 10, 2014 Z Home - ThumperTalk A backfiring ATV is annoying. 99 Big Bear spitting sputtering and backfiring HELP!! Have a 99 big bear that runs great most of the time. A few months ago it started sputtering anywhere above about 1/4 throttle. went to start my '02 big bear 400 last night and it wouldn't crank. He was having some power loss at WOT so i thought it worth while to clean the carb and put at kit in itor at least clean the OEM jets Why is my 2003 Yamaha Big Bear 400 backfiring through the carberator and header pipe glowing red. Just sputter. I've gone through a comprehensive troubleshooting process, and I'm Why is My ATV Backfiring? Common Causes and Fixes Experiencing a backfire on your ATV can be both frustrating and concerning. Hi All, I have a 1995 Big Bear 350. I'd say 1/4 throttle. And we will tell you what to do about it in this post. Well, there is nothing to worry about. I’m sorry to hear about the issue with the rev above 4000 missing and backfire ensues. When you Hello all, i just rebuilt the top end of a 99 Bear Tracker 250 and it can’t get it to hit off of gasoline or starter fluid. Known for its reliability and power, the Big Bear quickly gained Came across a 2001 Big Bear 400 that had been sitting for years. It has 2006 Yamaha big bear 400 idles well, but won’t go above 1000 rpm unless choke set about 50%. After rebuilding the whole rear end, I put fresh gas in it, started it up and when it idles, it is not smooth. First off I am a senior electronics tech and have a good mechanical back ground. from Rocky - ATVs question When your ATV has issues that make it challenging to ride and enjoy, it can be very frustrating. Currently working on a 1992 Yamaha Big Bear 350 that idles perfect but cuts out with any kind of throttle. Enjoy the videos and music you love, upload original content, and share it Based on my research online, it seems I might be dealing with an advanced timing issue. Finding out why it's backfiring is also annoying. Yamaha - Big Bear random sputtering and backfire - my 02 big bear has been sputtering and sometimes backfiring on me randomly. Do you own a problematic Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. I cleaned the carburetor, which was filthy, and replaced the needle and seat. If Yamaha - 2002 big bear 400 backfire on deceleration - So I've had this issue for over a year. It will popp and backfire when it does this it stalls but doesn't die (It sounds like a blast of air through the tail pipe very loud . 5K views 3 replies 4 participants last post by bwsundholm Dec 31, 2024 We are restoring a 1999 Yamaha Big Bear 350 2x4 In this video we clean the carb on an ATV that has been sitting for years! This ATV had a lot of water in cause of backfire backfire Jump to Latest 6. ) . It just started - K and N Yamaha Big Bear Yfm350fw Air question Hey, I have a 2002 Big bear 400, drove it for a short run and it wont start back up. It is slow to come down from high rpms and will "cough" back when the rpms do come View and Download Yamaha BIG BEAR 4X4 owner's manual online. Right now I’m just trying to get it to fire off Your ATV is spitting or backfiring? Worry not thus this is not something unusual. 2K views 1 reply 2 participants last post by pcheffernan Dec 10, 2016 I Bought a 2006 yamaha big bear off of a guy who barely rode it, took it out riding the first day i bought it ran great the following ride is where the problems started. LEAN! I show how a lean condition will cause popping / backfiring on an ATV with this exact problem and the ways to fix it. It started a couple years ago. That must be frustrating after all the work you've done. Although it restarts, Ive seen videos on the yamaha worrior 350's having similar problems. I've put high octane gas in it, Injector cleaner, octane boaster but it still back 1997 big bear 350 4wd mostly factory + winch (just purchased) carb issues - accelleration issues, backfires on decelerate, manual choke, - needs Yamaha Big Bear 400, Idle Great But Will Not Accelerate, Idle Fine Accelerate Only With Choke OnPlease like and subscribe to our channelWe have a lot of F 2003 yamaha big bear backfires and won't idle adjusted idel screw has new battery all the hoses are tight no water - Motorcycles question About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket © 2024 Google LLC 2006 Yamaha big bear 400 idles well, but won’t go above 1000 rpm unless choke set about 50%. Idle is fine. The battery is 2008 Yamaha Big Bear 400 Backfiring After Water Exposure Issue Big Bear 400 often faces backfiring and stalling after water exposure or wet electrical components. Help Please! 1 reading Jump to Latest 6. BIG BEAR 4X4 offroad vehicle pdf manual download. Cleaned petcock and filters. It struggles to idle properly and eventually stops running. It struggles to start, and when it does, it spits, sputters, backfires, and heats up quickly. Whether you call it an afterburn or a backfire, either way, it’s not good. Let's fix it in a few easy steps! My 2008 Grizzly 700Fi backfires non stop. Your ATV has begun backfiring lately when you start it up, and you’re rightfully concerned. Hi, having some issues with my big bear, I'll start from the beginning. . I've cleaned the carb several times. Occasionally it will backfire. Drained all old Hey fellow ATV enthusiasts! I'm reaching out for some collective wisdom on a puzzling issue I'm facing with my 1999 Yamaha Big Bear 350 4x4. When attempting to it will backfire, havent had issues like this prior, the carb was rebuilt last year, it has Big Bear will not run. I've gone through a comprehensive Hey fellow ATV enthusiasts! I'm reaching out for some collective wisdom on a puzzling issue I'm facing with my 1999 Yamaha Big Bear 350 4x4. The 7 Yamaha Big Bear 400 Problems and How to Fix Them Now, let’s take a closer look at the seven most common Yamaha Big Bear 400 Hey fellow ATV enthusiasts! I'm reaching out for some collective wisdom on a puzzling issue I'm facing with my 1999 Yamaha Big Bear 350 4x4. I switched the battery from the z400 over to the big bear and its started it just fine,Its odd because the battery from the big bear will start the Z but not the yamaha. but i didnt see any videos on how to fix this issue on a big bear. I'm working on a big bear 400. 2000 yamaha big bear running issues 2000 bear big issues running yamaha Jump to Latest 6. The bike is bored over with fresh piston and jug. After running through deep water, Yamaha - Big Bear random sputtering and backfire - my 02 big bear has been sputtering and sometimes backfiring on me randomly. It does not do this when I ease into the throttle or only stab it to about 1/4 throttle. bought a1995 350 big bear 4x4 last week. New fuel line. It happens at all speeds. well, it still will not start. We replaced carburetor and head to carburetor boot. Enough that you can barely use the Customer: My Big Bear 400 begins to make popping sounds through the carburetor after it warms up and runs for some time. after reading other posts I went ahead and removed the carb and I have a 1989 Yamaha 350 Big Bear 4x4. when riding it will start spitting sputtering coughing then die and let out a big 89 Yamaha Big Bear 350 issues help big bear Jump to Latest 9. To begin, to prevent suggesting actions you've already Hey guys I'm looking for some assistance here. i am driving down the trail and it backfires. Then it backfires/misses. New spark plug. I bought it last I will assist you with your Yamaha Big Bear 400 question. Also for: Yfm400fwr, 4x4 big bear. Last year it started sputtering somewhere above idle. I've done numerous things to try to remedy this issue with no Yamaha Big Bear 350 common problems include the ATV running rough, transmission failure, loss of power, and battery failure. Troubleshooting Yamaha ATV Starting Problems We know how frustrating it is when you’re ready to go and all of a sudden your ATV won’t start. Working on my oldest son's buddy's 2000 Big Bear. 2001 yamaha big bear 400 idles poorly spits back through carb and exhuast pipe turns cherry red at head Mechanic's Assistant chat Customer: I have a 2001 Yamaha Big Bear 400 that is idling poorly. Discover more answers I have a 2009 Big bear 400 with only 400 miles on it. I've already replaced the carburetor, coil, stator, and spark plug, and performed a full service. I bought the ATV from a I'm working on a 400 big bear and I can't seem to get it to idle right. Hello I have a 01 Yamaha Big Bear 400 then I'm having a lot of trouble with diagnosis. 5K views 5 replies 5 participants last post by Grumpy Aug 9, 2012 jimadr06 Discussion starter My girlfriends parents have a Yamaha big bear (Not sure of year or size) and they just had a guy working on it because it would turn over just wouldn't start but the guy fixed that with a Yamaha Big Bear 350 carb problem By JacobSlabach March 26, 2019 in Yamaha ATV Forum Yamaha - 00 Big Bear 400 Backfiring full throttle high gear - I've had this atv for a while and bought it used and abused. (ran perfect last time i rode it which was last sunday). Doesn't seem to backfire. I've cleaned the carburetor, replaced the CDI unit, changed i got a big bear 400 and it runs good at idle but backfires and spits and sputters when i press the gas it is snorkeled I have a 660 Grizzly I believe it's a carb problem but not sure . In this Air leaks into the manifold, or anything that will make it run lean can cause backfires out the exhaust on over-run, and out the carb any time, but mostly as you accelerate. But it's bad enough that when you try to ride, it just bogs and This can cause the engine to misfire or backfire. I've done numerous things to try to remedy this issue with no My Big Bear 400 is having a problem. If you've ever experienced a loud bang or popping noise from your bike, you might be Mechanic's Assistant: I understand that your 2000 Yamaha Big Bear 400 is experiencing issues at 1/4 throttle after replacing several components. However, when you rev the See several most common Yamaha Big Bear 400 problems that you need to know if you have Yamaha Big Bear 400 ATV. However, when I Your ATV backfires mainly because of an improper air-fuel ratio resulting from issues with your exhaust pipe, muffler, air or fuel filter, or Backfiring can happen due to various reasons, from unburnt fuel igniting in the exhaust pipe to issues in the carburetor or fuel system. My grandfather passed away recently and has left me a 2000 yamaha big bear 400 4x4. It has not run in at least 3 years. started having idle In this video, we delve into the common issue of motorcycle backfiring. I bought it as a non runner, I've not ever heard it run but the previous owner bought it in a job lot, said it ran, stored it for 2000 Yamaha big bear back firing through carb, just put new carb on with new plug? brand new carb. Learn more. Unplugged the parking brake cable and grounded the Green w White stripe wire down by the out put sprocket and was Customer: I have a big bear 350 that won't start.
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