Yamaha big bear backfires. Jump to Latest 21 - 40 of 60 Posts.

Yamaha big bear backfires Joined Mar 12, 2022 · 2,476 Posts #21 · Dec 13, 2023. It starts fine, revs fine in neutral, and takes off at lower rpm like normal. Usually ther Yamaha Big Bear/Bruin/Wolverine ATV Discussion. SOURCE: my yamaha 2008 big bear 400 will not stay running Time for a carb cleaning. K and big bear 400 hard shifting. We replaced carburetor and head to carburetor boot. Went through everything I could think of as well as some other stuff I got off another site. Same problem. 2001 yamaha big bear 400 idles poorly spits back through carb and exhuast pipe turns cherry red at head. Jump to Latest 14K views 12 replies Yamaha Big Bear 400 Carburetor Problems. I have to prematurely shift in order to get any speed I bought a 2011 big bear 400 IRS just over a month ago. grizzlyriders. Took it to local mechanic who couldn’t figure it out. Put in a new Help Needed: Yamaha Big Bear 350 Engine Troubles. I bought it to resale from a guy that just wanted rid of it. Big Bear 400 Starter/Choke. It fired up, ran a little rough, then stalled. Yamaha Spitting back through carb. By TimothyLindblom. I have cleaned the carb, changed the CDI unit, replace the fuel, added stabilizer to fuel, checked for leaky Customer: Ok asking about Yamaha big bear 400 big bear after going through electrical and mechanical, plus carb, have narrowed it down to either voltage rectifier or CDI box, as when you rev above 4000 missing and backfire ensues. Explore Our Forums. Then it backfires Yamaha Big Bear/Bruin/Wolverine ATV Discussion. When you ride full throttle for more than a minute it will start backfiring and running like s#!t. If I hold the throttle open about 1/8-1/4 inch it runs great. Help!!!!! By afraid2fly, July 13, 2010 in Utility ATV. I started to adjust the Choke, I dont remember if it was on setting 1, 2, 3. Content on grizzlyriders. my 2012 big bear 400 is hard shifting can anyone help me Just got a Yamaha bear tracker 250 and joined here to see if I could get some help. On half-choke, it runs great throughout the throttle range until it starts to get warm, then it idles a little rough and idles better on NO choke once it starts to warm up (5-10 Yamaha Big Bear/Bruin/Wolverine ATV Discussion. Hi, first time user here. 1995 Big Bear 350 4x4 missing/sputtering above idle . Doesn't seem to backfire. Adjusted throttle. Jump to Latest 10K but throttling up sputters and backfires. A. 2 quarts. escgrease Discussion starter. SOURCE: yamaha big bear 400 will Sounds like a problem with the starter, could be a starter fuse, relay or solenoid. The temp was about 20 degrees when I tried to start the Big Bear (it had been outside because we were out camping) and the Big Bear wouldn't start, it would click like the battery was going dead. got a big bear I'm working on for a guy and it was flooding gas out into the air box, but still running. Back in 2002 I bought a Mikuni Carb VM 34 from Jeff Kazimour at Carb Parts Warehouse (who closed his shop last year). Idle is fine though. 02 Big Bear 400- Hi-idle & backfires while running. I adjusted idle speed but it only revs up to higher rpms than what it shoud at idle. From my research have concluded the voltage rectifier may be faulty or the capacitor in the CDI box is faulty due to damp. Enough that you can barely use the machine. Right now I’m just trying to get it to fire off without the carburetor like I’ve done a thousand times before with other engines. I'm not too good with carbs, so instead of rebuilding I just put a Centric carb in it. 1990 Big Bear Carburetor Adjustment Questions . My buddy has a big bear 400 that is spitting back through the carb at idle and just above idle. By wheeliewayne. 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 Got it all back together, fired right up and idles like a champ but when I apply the throttle and rev the engine, it sputters and back fires. After putting it back together there was two wires (one yellow and one black color) that were just hanging next to the engine. Senior Mechanic & Technician 2006 Yamaha big bear 400 idles well, but won’t go above 1000 rpm unless choke set about 50%. big bear 400 hard shifting. Yamaha Big Bear Backfiring When you ride full throttle for more than a minute it will start backfiring and running like s#!t. Working on my oldest son's buddy's 2000 Big Bear. I'd say 1/4 throttle. Edited December 4, 2022 by Bruce Sawyer My 91 Big bear will only idle on half choke. It will start on half choke, run on half choke but when I try to take the choke off when the engine is fully warmed up after 10 mins or more of Yamaha Big Bear/Bruin/Wolverine ATV Discussion. Mad Mike. Anyways, got this new-(old) 98 big bear 350 4x4 in Alaska. Bought new, original owner, only 500 - Yamaha 2002 SR 400 question It backfires through tailpipe and breather box under seat while struggling to run during warming. 14830 posts · Joined 2012 Add to quote; Only show this user #2 · Dec 16, Hey guys I'm looking for some assistance here. Come join the discussion about performance, modifications, classifieds, racing, maintenance, and more! Open to Banshees, Raptors, Blasters, and others for recreational riding and racing. Customers claim that the vehicle frequently has this problem, which is mostly brought on by malfunctioning . It is down on power but only at higher speeds. It starts right up, idles fine and runs good with one exception. 2003 yamaha big bear backfires and won't idle adjusted idel screw has new battery all the hoses are tight no water in gas any suggestion Posted by Anonymous on Oct 20, 2014. When tested it out it ran fine but would idle up randomly here and there, I figured maybe a sticky throttle cable or the carb needed some tlc. If I try to go anymore it coughs,sputters and backfires terribly. I have a 2003 Big Bear 400. By stultz33, August 13 put it all back together set the timing and went to start it and everytime since all it wants to do is backfire through the carb, I have set the timing every which way mutiple times, adjusted the valves which are opening buy the way and not stuck, all I did to the carb was check and see if the float had how to adjust carburator on big bear 400 throughly cleaned carb adj valves pipe is glowing red backfires and misses - K and N Yamaha Big Bear Yfm350fw Air question. I think maybe the needle might be set a bit lean but I 2006 Yamaha big bear 400 idles well, but won’t go above 1000 rpm unless choke set about 50%. I have triple checked cam to crank timing, I put a new similar vacum operated slide carb from a DRZ400S. 400. It runs fine at higher RPMs but when it is idling it cuts out and dies. Mech · Registered. This imbalance can lead to poor fuel efficiency and My Girlfriends father has a 2000 Big Bear. Idle is fine. Still causing the problem. Then it backfires/misses. 2K *·-:¦:-·* Silver 2011 Yamaha Grizzly 700 FI / EPS Special Edition *·-:¦:-·* JBS Hotrod Sheave, 16GR Weights and a Purple Secondary Spring I'm new to the forum, I live in the UK. Jump to Latest 14K views 12 replies The Big Bear did well the first 5 mornings. It'll backfire out of the carb too sometimes. I think it has roughly 1300 miles and still has the stock tires on it. flowershin5 Discussion starter. Share More sharing options 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. Last year it started sputtering somewhere above idle. 5 posts · Joined 2018 Add to quote; Only show this user #1 · May 14, 2018. The bad bits are no brakes, the rear axle bearings are shot and the SOURCE: yamaha big bear 400 will Sounds like a problem with the starter, could be a starter fuse, relay or solenoid. I have had the carb apart and cleaned, drained and changed the fuel and tried a new plug. The bad bits are no brakes, the rear axle bearings are shot and the transmission won't shift through the gears properly. Can't pull start yamaha big bear 400 too much compression. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Why is my 2003 Yamaha Big Bear 400 backfiring through the carberator and header pipe glowing red. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Yamaha ATVs. it will rev up with the choke closed but as I said it just I have just bought a 1995 Yamaha Moto 4 350. Jim, Fast Green Convertible "06" 660 on 26" BH OG's with Stock Wheels. Then I went to start and she shut down after rpms slowed to a stall. 02 Big Bear 400- Hi-idle & backfires while. From its early days until today, Yamaha A forum community dedicated to Yamaha Grizzly owners and enthusiasts. The pilot jet was set to 2. The guy had just bought a new battery and we put it in and started it. guys, I created this account to seek some help, I am a master certified car mechanic, and am working on my friends 2009 yamaha big bear 250 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. 1K views 1 reply 2 participants last post by minuteman Feb 16, 2010. The start cicuit wiring could also be damaged. If anyone knows Jeff and how to get in touch with him please let me know. It started acting up on a normal easy drive. I bought it last winter. 9K views 5 Hi there, I recently picked up a 97 big bear to beat around in the bush. 5 mm belt, Purple Secondary Spring, 21 gram weights, weight covers reduced to 29 mm diameter and a 2 mm Cut Cam Plate. 1999 350 big bear ran with old carb on it but it leaked and most of the screws on it r stripped from having it spart so much i bought a new carb everything was the same installing it and now it won't start, any ideas 2009 yamaha big bear 250. Content on bluetraxx. 2,944 Satisfied Customers. Yamaha Big bear 350, just rebuilt carb, only runs well when choke is on. I replaced the starter relay which is located on the outside left rear of the frame. If you can pull-start the motor, and it runs fine, you have pretty much eliminated any problems with the motor. Jump to Latest 4. And a battery. Expert. I was given the bike after it was laid up for a year or more under a car port. Could there be aproblem with the choke. 97 Big Bear 350 hard to start in cold weather. Hence, you need to know them before you experience them. Content on raptorforum. The pop is quite loud and usually precedes a flame that can emerge from the exhaust after the engine backfires. Yamaha 2004 Big Bear 400 4x4. When I first got it about 5 days ago she would start ok, idle was good. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 2011 Yamaha Grizzly 550 - BlueQuadboss Rear Rest Trunk27" Maxxis Zilla's14" ITP SS 212's WIFES: 2009 Yamaha Grizzly 550 - Green27" ITP Mudlite XTR's14" ITP SS 112's KIDS: 2010 Yamaha Raptor 90. my 2012 big bear 400 is hard shifting can anyone help me Yamaha Bear Tracker 250 Runs but doesn’t drive . Sort by Oldest first Oldest first Newest first Most reactions. I need to know the year of my yamaha big bear 400 2wd the vin is 5y4ah08y51a011571. On the same account if I try and let it idle it seems to idle so low it just dies. I got it with the rear removed because the guy had a mechanic remove the rear diff because it was bad. But if it was much Yamaha Big Bear/Bruin/Wolverine ATV Discussion Mid-Throttle Range Bogging My 01 Bear Tracker 250 cuts out in the mid throttle range on NO choke until engine is hot. It would run for a while, with an erratic idle, then die with a pop. Full Forum Listing . Still low compression, still fouling plug, still running rich. I purchased a “BACKFIRES THROUGH CARBURETOR “I see all kinds of posts about this subject, my 2001 big bear was doing the same thing, I replaced every electrical part on it 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. out how to adjust the needle and adjusted it down (leaner), and it doesnt change the way it runs except that now it Yamaha Big Bear 400 is running rich, it runs good at high speed but loads up at idle. Car Specialist. Change your spark plug, clean out your tank (Take out the fuel shut off valve before you do this as there is a very delicate filter on the shut off valve that could be damaged otherwise), and replace your air filter. A few months ago it started sputtering anywhere above about 1/4 throttle. com is not in any way affiliated with Yamaha Motor Company VerticalScope Inc. Occasionally it will backfire. Show Less . The battery is completely shot and I was not able to pull start it. It will look like this and the part number is 29U-81950-93-00 The 1998 Yamaha Big Bear 400 has a variety of issues, including the fact that it can be challenging to start up at times. but i didnt see any videos on how to fix this issue on a big bear. Tags 350 bear big cold hard start weather. Sometimes it will idle and other times it wont. I have re-built the carb, replaced ignition coil, new plug, new plug cap, cleaned gas tank, fresh gas (obviously. It Kodiak/Big Bear/Bruin/Wolverine Discussion. Motorcycles, Snowmobiles, Go-Carts, Motorized Bikes, ATVs, Electric Mobility Scooters and Golf Carts - yamaha big bear won't start - I have a 2000 yamaha big bear 4x4 400. Put in a new spark plug, the old one was black as hell, unsure if it was caused by old carburetor or current misfire. 99 Big Bear spits sputters backfires HELP! Jump to Latest A forum community dedicated to Yamaha ATV owners and enthusiasts. My 91 Big bear will only idle on half choke. BrianB3250. It Customer: I have a 1999 Yamaha 350 big bear ATV. 97 big bear 350 4x4 high idle issues. It just won't run. The motor runs and it drives if it up on jackstands but if 02 big bear 400. Yamaha 2005 Big Bear 400 4x4 . Search Fixya. The machine is in overall good condition and I got a good deal on it. bluetraxx. Good job Jeff. It came with a parts machine which is a 96, which I am coming to find out is VERY different from his machine. Yamaha Big Bear/Bruin/Wolverine ATV Discussion Mid-Throttle Range Bogging My 01 Bear Tracker 250 cuts out in the mid throttle range on NO choke until engine is hot. I am getting a new plug tomorrow and My Big Bear 400 is having a problem. Browse Categories I have a 1995 Yamaha Big Bear 350 4x4. 50 posts · Joined 2013 Add to quote; Only show this user I bought a lightly used 2002 400 Big Bear 4wd today. I Yamaha Big Bear/Bruin/Wolverine ATV Discussion kodiak 400 backfiring and dying I have a 400 kodiak and when its started it will backfire and sputter and die out while driving. Tags #atvtroubles #mechanichelp #yamahabigbear. Just got a Yamaha bear tracker 250 and joined here to see if I could get some help. Cleaned gas tank, replaced petcock, lines and carb. Generally the condition isn't too bad (I paid very little for it!), it looks quite original and all the plastics are quite good. It is a 98 Big Bear (YFM350FWB). 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 said they can see black smoke. Changed oil and air filter. Take off the carb, take it to someone with a sonic cleaner. It kept doing that until the weather would warm up. The motor runs and it drives if it up on jackstands but if you get on and try to ride it, it starts to drive but then quits after a foot or two and dies out Yamaha Big Bear/Bruin/Wolverine ATV Discussion 2014 kodiak 450 backfires and stalls in water 2014 kodiak 450 backfires and stalls in water. I removed the fuel line from the carburetor and it was bluetraxx. I changed the plug ,put in new fuses,changes the oil, Ive seen videos on the yamaha worrior 350's having similar problems. Hi everyone, I’m new here and new to 4 wheelers. 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 said they can see black It will start, but backfires through the carb and dies. 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 and use the new orings that come in the kit. It kind of tops out at higher rpm. I cleaned the carburetor, changed spark plug, and reset the valves. Jump to Latest 2012 Big Bear 400 (Green) Full Ricochet skids Kolpin Gun Boot w/transport case Fat Max box IPI front bag 27 Zillas. When I first got it, the battery was dead so I was pull starting it. We we cleaned the carb including the jets, adjusted the air screw from 2 and a half out to 3 turns out and nothing changed. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Yamaha Backfiring through Carb 2000 Beartracker. Anyone know what might be wrong with that piece of non honda crap! The temp was about 20 degrees when I tried to start the Big Bear (it had been outside because we were out camping) and the Big Bear wouldn't start, it would click like the battery was going dead. I've SOURCE: yamaha big bear 400 will Sounds like a problem with the starter, could be a starter fuse, relay or solenoid. Jump to Latest But today it didn’t seem to want to start it was just the backfires. Jump to Latest 21K I have a 1995 Big Bear 350 4x4. I am working on a friend's '01 Big Bear 400 4x4. I inherited a 2001 Yamaha Big Bear 400 (carbureted) that was used on the family farm. 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 said they can see black I'm working on a big bear 400. Yahama atv big bear 400. RichardG. F. 3501 posts · Joined 2006 Add to quote; - 1994 Yamaha Big Bear 350 4x4 - #3 · Mar 1, 2013. Andrewsharp . 5 mm shim, -1. Like most farm machines it has been worked pretty hard over its life. raptorforum. When I stab the throttle all the way from an idle, it bogs down, backfires a bit and wants to die. The problem is it is running so badly it won't stay running at an idle. com is generated by its users. My Big Bear 400 is having a problem. Want Answer 0. It has fire and is getting lots of fuel. My grandfather passed away recently and has left me a 2000 yamaha big bear 400 4x4. 1 2 3. Yamaha 2005 Big Bear 400 4x4 02 Big Bear 400- Hi-idle & backfires while running. Setting the timing on yamaha big bear 400 - Yamaha 2005 Big Bear 400 4x4 question. PhillL128. On half-choke, it runs great throughout the throttle range until it starts to get warm, then it idles a little rough and idles better on NO choke once it starts to warm up (5-10 minutes at 30 F degrees). Cleaned the carb twice, cleared all jets, tested float. It was runnig great shut it off now it won't start. On morning number 6 it got cold, real cold. Tried cleaning carb & air filter, drained bowl & cleaned with carb cleaner. I recently purchased a '96 Big Bear 350. When the temp was above 40 degrees or so, it would start fine. Background: My Big Bear was running fine not too long ago, but it unexpectedly cut out on me. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Open to all Grizzly models including 700, 660, 600, 350, and 125. 2003 yamaha big bear backfires and won't idle. say 15-20 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. Joined Mar 12, 2022 · 2,512 Posts #45 Currently working on a 1992 Yamaha Big Bear 350 that idles perfect but cuts out with any kind of throttle. So here you go! Yamaha Big Bear/Bruin/Wolverine ATV Discussion. 2004 Yamaha Beartracker, new carb. The Yamaha Big Bear 400 is often prone to carburetor issues, which can manifest as an engine running too lean or too rich. . M. 5 turns out, so I used the same setting raptorforum. Save Share Reply Quote Like. Currently working on a 1992 Yamaha Big Bear 350 that idles perfect but cuts out with any kind of throttle. Ridgway81432. At the time it was freezing cold. I have a 2002 Yamaha 400 4x4 big bear ATV it has a bogging problem at 1/4 throttle it spits and sputters and pops A forum community dedicated to Yamaha Grizzly owners and enthusiasts. Just sputter. It is cutting out when idling. How - Yamaha 2005 Big Bear 400 4x4 question When My Yamaha Big Bear starts not running correctly I can removed the carb bowl drain screw with the petcock turned off and drain the bowl while the engine is COLD and then turn on the petcock and let some gas flush the bowl, turn off the petcock re-install the bowl drain and good to go. 2001 Big Bear 400 misfiring/backfiring. He didn't ride it enough so had to have several things done and after having the carb cleaned he got it back and the front brakes were stuck and so he asked if I 2000 Yamaha big bear front differential rebuild. This problem similar to the rev limiter you see on newer models when Help Needed: Yamaha Big Bear 350 Engine Troubles. What’s the Real Effect of an Engine Backfire? The severity of Yamaha Big Bear 400 problems are going to affect your riding experience. 5K views 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 sounds lie it getting too much fuel or too much 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. Jump to Latest 21 - 40 of 60 Posts. It just started - K and N Yamaha Big Bear Yfm350fw Air question. 3rd,4th, and 5th all do the same thing. It starts and idles like a champ, but dies and wants to backfire SOURCE: yamaha big bear 400 will Sounds like a problem with the starter, could be a starter fuse, relay or solenoid. General Drivetrain Maintenance New Member Yamaha Big Bear/Bruin/Wolverine ATV Discussion. 1991 Yamaha Big Bear 350 4 wheel drive. Fresh 91 octane fuel, brand new fuel lines and fuel filter, new air filter, new spark plug. COOP45 Primary, 1. Any Posted By: K1500 Yamaha Big Bear 400 Down On Power - 12/23/20. com is an independent Yamaha enthusiast website owned and operated by VerticalScope Inc. Not sure where the mixture - Yamaha 2005 Big Bear 400 4x4 question. Removed limited slip (4KB-46470-11-00) and washers fell out. Reactions: devon. Jump to Latest 6. 2002 yahama big bear atv. but won’t go above 1000 rpm unless choke set about 50%. try the pump mod it worked for alot of guys '97 Warrior '08 Big Bear '05 LTZ 250 '05 Trailblazer 250. Jump to Latest 4K views 6 replies 2 participants last post by cory52000 May 18, 2018. Runs OK at idle but bogs down when I hit the throttle and won't reach higher RPM. It is hard to start when it finally starts it spits, sputters, backfires and gets hot quickly. E. Can't pull start Customer: 2006 Yamaha big bear 400 idles well, but won’t go above 1000 rpm unless choke set about 50%. Temps have warmed a little, now about 35F day and 20s night. they go into a wire harness that gets routed between the gas I worked on a 98 Big Bear for a customer a few years back and had similar issues. Thanks, barney . Running too rich, sometimes starts sometimes not. I was able to get it pull started. Only show this user I have a 1995 Big Bear 350. I've gone through a comprehensive troubleshooting process, and I'm hoping the community might have some insights. Browse Categories Answer Questions . 2000 big bear 400 spits and sputters blows gas out back of carb into air box at I am working on a basket case for a friend. This carb with a twist throttle made my ATV run like a spotted ape. Yamaha 2005 Big Bear 400 4x4. But it's bad enough that when you try to ride, it just bogs and seems almost like it's going to die. After Hurricane Harvey the carb I'm new to the forum, I live in the UK. 2 posts · Joined 2010 Add to quote; Only show this user #1 87 Yamaha big bear troubleshooting electrical no fire what are some solutions? How much oil does a Yamaha big bear 400 hold? The oil capacity for the Yamaha Big Bear 400 is 3. 8K views 1 reply My Big Bear 400 is having a problem. I have had the carb apart and it seems ok? Anyone have any suggestions? Any input is welcome. I think maybe the needle might be set a bit lean but I don't know. I have just bought a 1995 Yamaha Moto 4 350. Save Share Dies after a few seconds upon startup 2002 Big Bear 400. It has not run in at least 3 years. Adjusted and tuned carb. Anyway, first thing is first. Low power, low compression, fouled spark plug (carbon build up). jwrw toivfrs mlu ixr enli tywyij jculau dlid qyzol ofgbgyl