Mazda 3 knocking noise when accelerating. Does the sound increase with the engine RPM when 1.
). If the knock sensor goes bad, then the motor can knock. I do not want to accept that just yet because I don't drive my car to point where the engine needs replacing. – The knock pulse is at camshaft speed (1/2 the engine rpms). Apr 23, 2009 · I have experienced an on-going problem with our 2008 CX-9 and could use some help. 3. When driving up a hill leaving our neighborhood in the morning The noise happened only on an incline as well. Jan 7, 2023 · Causes of Whining Noise When Accelerating. You noise sounds incredibly similar to a worn out belt and potentially worn out pulleys. As you accelerate, the banging noise might come from the engine block leaning backward. 1000 to 2000 RPM. The first is belt noise. Sep 6, 2014 · Took to the dealer to inspect pop/clunk noise Hello everyone, Just some information, I took my 2014 Mazda 3 SGT in because of the noise a lot of us are having with the suspension. It would be fine when cold or warm like short trips but when sitting in traffic and it gets hot (coolant at 90C - 105C and trans at 68C - 80C) Jul 23, 2023 · Mazda. 5 Aug 29, 2023 · If the root cause of a ticking noise is the knock, the only solution that will help stop the ticking noise will be to have the entire motor replaced. to/c/104/au/engine-mountDo you hear a clunking noise in your car or truck when you accelerate, or shift gea Mar 14, 2023 · If you hear it knock only when accelerating, it is most likely engine knock or pinging, but if you constantly hear the noise, it may be caused by something else. Some engines have a normal ticking noise caused by electrical components like injectors, relays, and solenoids, and also, the engine itself makes some noise turning thousands of RPMs (revolutions per minute), but for the most part, engines should generally have only a very soft ticking noise with no knocking noise. I do not observe any change in car's performance. Dec 18, 2023 · Exhaust leaks: Leaks in the exhaust system can cause a whistling or hissing noise when you release the gas pedal. However, you should always do this with caution and make sure it is secure on jack stands before sticking your head Jul 19, 2001 · 2005 Mazda 3s w/ 197k miles Noticed it faintly 3-4 weeks ago, but didn't think much of it. Apr 18, 2024 · 2007 Volvo V70 2. Dec 12, 2011 · Folks, Recently I have been getting a slight metallic rattle when accelerating with a light load (i. 75 qts, oil started showing up on the dipstick. Or when accelerating between particular speeds, such as 50-55 mph. after checking several places everything looks good but CV shaft. Aug 23, 2013 · clunking in the front end Had the same problem with my mazda 3 after replacing both struts, all motor mounts, sway bar end-links i decided i would change the lower control arm ball joints even though i couldn't get and popping noises out of them when moving them around. Then, most likely you’re probably experiencing, engine spark knock (engine knocking). Mazda 6: Bad Timing Belt or Chain Symptoms . It will do this when I brake, accelerate and sometimes even when I just let off the gas. The solution is to get a replacement knock sensor for your car. At 1500 rpm and upwards. Various factors can contribute to your car making noise when turning. 5L, auto). If you need to get further under the car, you may need to jack it up. 5l ecoboost with about 40k miles on it. Some other usual things that can make knocking sounds are the serpentine or timing belt tensioners/pulleys, bad rod bearings, faulty hydraulic lifters , or noisy fuel injectors. 3 is similar Sep 12, 2007 · I was already bothered bad enought by the noise from front suspention in winter time, now another annoying knocking noise just started from rear suspension while acceleration!!! See the attatched graphic. It could also be due to a power steering issue, worn bearing or low engine oil. As the mini fireballs collide, a knocking sound is made. Probable Cause: Failed outer CV joint If your car is making a clicking noise when turning, it is likely you have an outer CV joint (constant velocity joint) that has failed because of a torn boot or old age, most likely a torn boot. . Ma Mazda 3 generates a noise when I accelerate that ends when I stop accelerating: At last, if you experience a noise when accelerating with your Mazda 3 and this noise which could be a cliking sound tends to stop when you disengage (press the clutch pedal), then Dec 31, 2021 · Okay so yesterday i was driving and suddenly i noticed a weird ticking noise coming from my 2011 mazdaspeed 3. This whining noise can be caused by a bad serpentine belt, a boost leak or a vacuum leak. Feb 25, 2022 · This is a very common problem with the 3. You know how you get thrown back in your seat when you slam your foot down? That’s what’s happening to your motor, too. Another engine knock sound that’s become commonplace with variable valve timing systems comes from the top end of the engine. Only when letting off gas then there is some smoke. I got a mazda 3 and it recently started making a single knocking/clunking noise in driver sides front end somewhere around brake area under slow but hard braking and hard accelerating from start. A little long winded here but hopefully this is the solution or one step closer to one. Thanks for reading! What Causes Engine Knocking When Accelerating? If the air-fuel mixture is not burning evenly, it can cause the engine to knock. But even with light acceleration noise is present. After it has clicked/popped once it will not pop under braking until I accelerate. 3L 5 speed with 133. May 4, 2023 · It mostly happens when you drive over a speed bump, and the object jumps around in your boot and glove compartment. Jul 26, 2017 · Its not a loud scary noise, its like a quite clicking or rattle like if you were to put a something like a straw in a fan while it spining and noise of the blade hitting the straw constantly is what I think it kinda of sounds like; the sound kind of tell the car is working. Aug 30, 2023. Apr 1, 2010 · knocking noise while accelerating. Many drivers may notice this sound amplifying and increasing when they accelerate. This is on the passenger side at the firewall, i don't know if the 2. This noise doesn't annoy me like the accelerating noise, and I'm not even sure if it is the same. 5-2K. As the driver, it's crucial to identify the possible causes of these noises and address them effectively to ensure a smooth driving experience and to prevent potential damage to your car. Does the sound increase with the engine RPM when 1. Aug 16, 2019 · Here are a few of the most common issues that would cause your 3’s engine to knock: Low Oil Low Oil. Dec 29, 2005 · I have a rattle coming from the engine compartment when accelerating. If left unattended you could seize your engine. 38 - 0. The engine was replaced in April by a local shop who specializes exclusively in replacing engines. The dealer has tried to chase it a few times with no luck and Mazda is saying everything is "within normal operating condition". Worn mounts, suspension, and steering problems can cause a knocking noise when taking the foot off the accelerator pedal. Cannot duplicate Oct 3, 2022 · Hello, I've been having an odd issue with my 2013 Mazda 3 skyactive sport that has 74,000km. Jan 21, 2020 · I have a 2017 explorer platinum with the 3. It may be difficult if the rattle only happens while accelerating. I don't hear it while in neutral and revving the engine, but when accelerating in gear from a stop I hear it. I was hoping it was something like the timing chain, or something VVT related, but it just seems like the noise is louder on the other side of the block. Apr 26, 2022 · After a recent trip, I started hearing a noise that I couldn't place. 2016 CX-5 GT: Noise from Feb 25, 2022 · A knocking noise when you’re accelerating is a tapping or pinging sound that gets louder and faster as you speed up. Thread starter KY-B3000; Start date Apr 1, 2010; Mazda Engine Size 3. I am enjoying the car, but I noticed when accelerating, there is a strange buzzing sound that comes in at about 2100RPM and disappears at about 2500RPM. To me it sounds like a heat shield or some real light metal material. That would also cause Feb 17, 2023 · This computerized control also helps the engine stay noise-free even without balancing these factors. I'm guessing maybe it's the suspension design causing this single clunk noise when the struts are being compressed over the speed bump? May 18, 2018 · No Code and definitely spark knock The computer has no codes. It is definitely more dominant in cold weather. Car runs good. It sounds like coming from engine head or the back of it but do not know for sure. Aug 9, 2011 · – The noise is heard inside the vehicle with all of the windows rolled up, all accessories turned off and engine running at normal operating temperature. I'm not sure if it's normal. It developed at about 9,500 miles and occurs in two scenarios: 1. Components of the fuel/air mixture can be ignited very early. This often manifests as a squeaking or squealing noise. Jul 12, 2018 · I have a 2019. Transmission whining noise when accelerating shows underlying transmission issues that need urgent attention. the noise pretty much goes away. In that case, the spare tire or your tools might be loose. M. Modern engines use a knock sensor to correct knocking automatically. Slapping. The list goes on. So my Mazda has been making this weird clicking noise when I accelerate. 6tdi about two months ago it started making this really annoying noise at 1500-2000rpm. Nov 13, 2014 · Two that are GM dealers. Nov 5, 2019 · If something is off with this timing, the fuel will fire at the wrong time, and there can be a knock. When I am coasting the sound seizes. I changed oil (as I do every 5000miles), tested AC on/off while set on cold/hot but the noise does not change. Jan 11, 2024 · When you hear a knocking sound coming from the engine bay, then there’s usually an internal issue with part of your engine. A rattling sound is a quick, typically unsteady series of noises. If engine noise seems to be from the bottom of the engine, it’s likely from damage to the connecting rod bearings. Feb 7, 2023 · It's the whining / howling / wheooo sound that has higher pitch, accompanies what I consider normal engine noise. 1) Accelerate up to at least 60KM/hour+ so the transmission goes into 6th gear My 2013 Mazda 3 neo has a very distinct knocking/clunking noise that comes from the rear, I had been told it was probably the sway bar links so I removed them but the noise continued so I put them back on. Aug 9, 2023 · Experiencing noise when turning your Mazda 6 can be both annoying and concerning. e. For instance, engine knocking, when working hard under load, like driving uphill, passing a slowpoke or towing a trailer. There is a clunk noise when going over a speed bump. 0's do it to some May 7, 2012 · 2- Knocking sound when driving very slowly over uneven road, the sound does not come if the wheel is turend left or right, but only when the wheels are straight I thought the sound related to the engine mount, managed to change the mount but the knocking sound still there, more obvious at very low speeds Jul 14, 2015 · Please Click here for VIDEO 3 (the knocking/ticking noise is very clear at 0. Car makes noise when accelerating at low speeds, and slapping noise is one of them. A failing knock sensor will not maintain balance in the engine, causing multiple knocks in the engine and loud noise during acceleration. Jan 24, 2024 · Engine knocking happens when there is a rattling noise from the engine bay when accelerating. After 20 mins of more driving and getting off the interstate, the sound was more evident especially when accelerating. The knocking sound isn’t as deep as throwing a rod, but it’s very Jul 25, 2018 · I have been experiencing a spark knock or pinging sound from my Mazda. Sep 11, 2020 · In this video I have a great example of what a clicking or popping CV axle sounds like when making turns while accelerating. To reproduce you need to do the following. Nov 1, 2019 · Noise only noticeable on cold engine with acceleration in drive. If the knock sensor goes bad, then the engine can knock. It can be heard on the inside or outside of the vehicle. And only appear when i brake and accelerating, but not while driving. Aug 10, 2023 · Are you hearing an annoying, engine knocking, pinging or rattling noise, when you accelerate your engine. I put a stethoscope to it and it *seems* to be coming from the rear of the engine (driver's side). I even dissect the axle so that Mar 28, 2013 · Hello I just bought 2004 Mazda 6 2. Nov 28, 2015 · I have a 2014 Mazda 3 GT Tech (2. How to fix. I drove the car and sounded like bad ball joints or bushings, metal to met Jan 7, 2023 · Why does my car make a knocking noise when I press the gas? Detonation knock or engine knock is the sound heard when the fuel-air mixture in one’s cylinder is excessively detonating. Apr 22, 2012 · Problem: Hassitation when WOT at 5. – The knock can usually be felt on the No. The strut was replaced a month ago because the first one was defective (purchased thru Firestone). Once engine has fully warmed up. However, I wanted to add it in case it could be Jan 7, 2017 · When I brake I can hear a clicking/popping noise from the drivers front. and I have gotten 3 different answers, from its normal to it needs a high pressure fuel pump. upshift to highest gear possible and fully open throttle. The sound is hard to describe but going back to my "fast car days", it sounds almost like something with the wastegate when at full boost. It’s driving me insane Here’s a video of my phone in the hood while slightly accelerating Aug 24, 2022 · I just got 2022 CX 30 Select AWD. May 23, 2019 · If not, go to this content page about the noises related to Mazda 3 noise wheels. Ticking Noise When Accelerating, Causes #3: Leaking Exhaust Feb 25, 2020 · I’m getting a light “clunking” noise from the front end. Aug 16, 2019 · Knock Sensor. I changed the spark plugs in October 2021, this didn't help. It occurs during acceleration. apparently it's a result of low clearance somewhere in the cylinder heads and that all 3. 4 amp, debadged and door edge guards removed, Lamin-X + indy fog mod, aluminum AC knobs, DIY SRI, TRS 5000K HIDs, more coming. I was low. This car is brand new with 60 miles. Also worth checking that the oil has been changed recently along with the oil filter. It also goes away when I use mid grade gas. It will only do it once each way. It had a cambelt changed since this problem appeared with a new tensioner and all 2007 Mazda 3 - Complaint: Makes unusual clunking/tapping noise when hitting bumps. If your engine develops a Jan 14, 2023 · Suppose the knocking sound comes from your trunk. I've owned many cars in the past and they dont make that noise. See: Timing Chain Jumped Symptoms and Diagnosis. I know what spark knock sound like (also called pre-ignition Detonation). Nov 19, 2005 · There are many inconclusive threads on this and other Mazda forums about the fairly common problems of a high-pitched or high frequency whining or humming noises coming from the engine at all speeds, but most apparent at around 60mph (100kph). Note that the louder noises in the clip and the shifter moving. A bad knock sensor will often throw a trouble code, such as P0325 (knock sensor “1”). Noise can be exacerbated if i shift over to manual mode. However, you should know your transmission sound to avoid confusing a fault with a normal operational sound. 4. Mine does it, only when its humid out or the car is cold. 230 miles from a dealership got it home and noticed a ticting/knocking sound when I would deaccel and accelerate and hear it in neutral when revv … There are various causes of engine knocking sound. Hassitation characteristics is 1 huge jerk forward (sudden deceleration) followed by normal acceleration. Sometimes it's louder sometimes it's quieter and on the rainy days or when drive over a very deep puddle it disappear all together for days. so I'm going to change it tomorrow hopefully noise disappear. A rod knock sound is one of the most serious problems. Two screws at the bottom fasten this piece to the dash and "ears" slide onto the plastic dash apron, holding the top of the metal panel in place. So far the end link has been replaced, as well as the sway bar bushings. Mramalho. Clicking Noise While Turning. Besides that, a metal object like a drink can or bottle could roll underneath your seat and hit its mounts, bolts, or even the car’s floor. In extreme cases, the whining could indicate that there’s a larger problem with the transmission that needs attention. This noise most often happens when you first begin to accelerate, and sometimes when turning. An exhaust leak at or around the exhaust can make a noise, often mistaken for a knocking sound. Let’s take a look at some rare problems. com http://1aau. It is not a "knocking" sound associated with bad gas and I use quality fuel. Final words. Oct 12, 2008 · On the V6, the purge solonoid valve has been known to make a knocking noise under very light throttle. There are three major reasons why oiling issues will cause your 3 to knock. Gear; Troubleshooting; CX-9. t's, Michelin Pilot AS3's, Spin on oil filter conversion, stubby antenna, Kenwood KDC-X997 hu + Sundown Audio SA12 + Infinity speakers + JL 320. Although purchasing a motor might be very expensive, a replacement is inevitable mainly because any other fix will just be temporary. I went up a longer incline and started at the bottom, it made a slight knocking noise for the first attempt, then every attempt to replicate the issue after the first attempt I wasn't able to do so until I got to the top and could no longer try. He told me that the crank is bad. Not a shit ton but noticable Mods: Stiffer mounts for all 3 mounts, CAI, coilovers May 20, 2021 · Hi! Luckily it is not a top or bottom end knock! Appears to be one of these parts: 1- any of the idlers\tensioners\pulleys 2- vacuum pump (right side of engine) Mar 20, 2018 · My driver's side front suspension is making a continuous, horrific clunking/popping sound when going over bumps at low speeds. It is the same with accelerating if I just braked it will pop under acceleration but it will not do it until I brake again. Jul 16, 2023 · Here is a link to a video of the knocking noise (links to a Google Drive video). 3l 2007 169k Brought this little car about 5 months ago fresh oil change with under 2500 miles and now it is developing this knocking noise, it is throwing a code which I will have to read but so far the knock is accelerating as the rpm goes up but goes away after 3k. This fast, disjointed sound is generally easy to identify and one you want to pay attention to. There is also a little bit of a rough idle upon startup. Basically we hear an engine knock / rattle noise when the engine is under load. Apr 6, 2013 · It happened shortly after some heavy acceleration. I've attached 2 videos. Oct 31, 2017 · There are a lot of things that can cause a noise when accelerating. I NEVER heard any kind of this silly noise from my BMW-M3 on any road surfaces!!! Its just Knocking noise Mazda 3 2. This is caused by the fuel not burning fully in the engine cylinders . Typically, the knocking will happen as you start your vehicle, speed up, or come to an idle. 5k - 6k RPM. The noise can be compared to the sound of a kid running along a stockade fence with a stick rubbing against it. Link to sound clip below. I have a SRI (Simota CBII) so makes noise as it is but this was different, it was parallel to the SRI sound and it would be noticeable between 1-3 gears and it would make the same sound as the engine when accelerating and it would change as engine noise changed when changing gears, not sure that makes sense but Jul 26, 2017 · Its not a loud scary noise, its like a quite clicking or rattle like if you were to put a something like a straw in a fan while it spining and noise of the blade hitting the straw constantly is what I think it kinda of sounds like; the sound kind of tell the car is working. 1. We’ll start with the more obvious ones. However, if the knocking sound is coming from underneath your car, that most likely means something has got loose or dislodged. I pulled off to an autoparts store, and checked oil level (among other things). Jun 25, 2021 · I have a terrible sounding rattle (gravelly?) sound from my motor from 2000/2500 to 3000 rpm especially under load like accelerating up a hill. Jan 28, 2015 · the car (mazda 3 2004, 2. To me it does not sound like valve knock or lifters. Mar 10, 2023 · What Causes Engine Knocking At Idle That Goes Away When Accelerating? Engine knocking that disappears when accelerating can also be caused by a lack of sufficient lubrication within the engine, especially when the knocking appears to be coming from the top of the engine. Also it drives without any noise or vibrations over corrugated road or at a high speed. Jul 8, 2014 · 2007 Phantom Purple hatch; JBR RMM/busihgs/shifter plate, Koni STR. Depending on your vehicle make and model, a little whining sound from the transmission could be completely normal. The car makes a weird creaking sound when I accelerate, brake or start the car and it sounds like its coming from the driver side. This knocking sound is caused by the uneven combustion of the fuel and air mixture. Its loose and can be moved by hand, the best guess is the body of shaft hitting a metal somewhere when accelerate or stop. I first noticed the knocking about two years ago. Knock Sensor. The harder I press the gas the louder and faster the noise gets. But when it is warm, not cold, I get a mild knocking sound when at the lower RPM range. There is no such problem when braking or accelerating smoothly. It could be as simple as a faulty spark plug that needs replacing, or it could be bad sensors installed in your engine. 3 engine mount. Jan 28, 2022 · I'd also like to note that I may hear a similar noise when my car not moving, switching between N and D. 50 seconds of the video) PS: I am new to Mazda and I am very sorry if this is a common thing with this car and I am making so much deal about it I just want to make sure that its normal. Also during WOT there is a rattling sound. Hissing A hissing sound from under the bonnet suggests there is a fluid leak, which is getting onto a hot part of the engine, such as radiator coolant leaking onto the engine block or exhaust manifold. Belt noise can mean the belt is worn or loose. You may experience a knocking noise when accelerating from a stop or a knocking sound under a car when braking. 0 Transmission Automatic Apr 2, 2010 #4 May 5, 2014 · 2014-2018 Mazda 3 Skyactiv Audio & Electronics 2014-2018 Mazda 3 Skyactiv Discussion 2010-2013 Mazda 3 & Skyactiv Discussion New Member Introduction & Forum News/Guide 2010-2013 Mazda 3 Engine and Performance A Teeth-Rattling Grinding Noise That Becomes Worse As You Accelerate; A Ticking Sound That “Ticks” Faster As You Accelerate; A Knocking Noise That Becomes A Rattle When You Accelerate; A Sound Like Pebbles In A Dryer When You Accelerate; A Slapping Rattle When Accelerating; The trick is always to find the problem sooner rather than later. This only happens at low speeds and the RPMs around 1. 2L 5 cylinder Diesel engine a rattle noise coming from the front off the engine, sounds like the A/c compressor clut Aug 30, 2008 · i have a slight ticking that almost sounds like the beginning of valve knock. Recently, during heavy acceleration/full boost (high load, low RPM OR high RPM), it makes an odd noise. Mramalho; Jul 14, 2023; CX-5 Powertrain; Replies 17 Views 9K. After about a 1. Shop for New Auto Parts at 1AAuto. 5 2012 Toyota Camry LE, 2. The noise, which was a kind of clicking/creaking sound was coming from the metal panel which is attached to the lowest part of the dash (the 'apron' at your knees), and covers the steering column. If the hissing happens when you accelerate, it could instead be a vacuum leak from one of the small hoses around the engine’s air intake. The car had two soft tires on the driver's side for a few weeks, I had them patched and noticed a knocking noise after the repair. They’ll hit each other or parts of the trunk and make a knocking sound. If your Mazda 3 is low on oil, it’ll cause a harsh knock as the engine is starved for oil. Exhaust Leak. Jun 9, 2023 · Peculiar Rattling Sound. Jun 27, 2015 · After just checking the oil levels and hearing the noise when accelerating he told me I would have to replace the engine. including oil temperature its seem likes. Let us discuss things that may cause engine knocking sound: Too Low Octane: Every engine is designed to work on a certain number of octanes. When the air and fuel mix is wrong, the fuel explodes in the cylinder instead of burning smoothly. When driving, it's very audible when for example accelerating from standstill. It’s as if something is shifting back and forth slightly. This is primarily noticeable when car is downshifting - for example on the freeway when you need to pass from 6th to 5th gear. 5 2010 Mazda 6 Grand Touring, 2. It may or may not be present at idle, but it will likely be most noticeable when you’re putting your engine under a heavy load. Jul 19, 2018 · if you have a clunking under the footwell or in the rear trunk/boot this could be the fix for you. May 28, 2022 · For more information on engine knocking and how to fix it, please contact a mechanic in your area. I have searched the car high and low with Common causes of engine ticking noises when idling or accelerating and how to find the source of the noise. Meaning if I pump the brakes it won't repeat it until I stop and accelerate to "shift" it back. It does it when the engine is at normal operating temp as well. Past week its gotten louder to the point i can easily hear it when speeding up, though it seems to go away after driving for a bit (maybe 5-10 minutes). Gear; Troubleshooting; CX-5. The noise can be produced when revving in neutral and driving. They were able to replicate the issue and in turn they replaced the entire drivers side strut bearing under warranty. I can’t seem to find any videos sounding like it so i was wondering if someone could take a listen and try to help me diagnose it. Mar 6, 2012 · Hi all, Yesterday my car was making this weird "whistling" noise when accelerating. 3L, 90000miles) started making strange noise in idle and low RPM. Its in the background a bit as i'm speeding up 2017~2025 Mazda CX-5 acceleration noise at low revs. Mar 21, 2024 · While the engine is running, see if you can discern where the noise is coming from. Aug 28, 2023 · The noise a damaged outer CV joint makes is a clicking noise with a metallic tone: sometimes faint, sometimes very noticeable, but constant while turning or accelerating. i've taken my car in to the dealership multiple times for the noise and each time they have looked at it, they claim that it is completely normal for this motor. May 22, 2024 · A banging or knocking sound under acceleration could be caused by damaged motor mounts or bearings. 5T, 16T, M56, Quaife, Do88, Hilton Stage 3 2007 Volvo XC70 2008 Nissan Titan SE 4x4, Crew Cab, Long Bed 2021 Toyota Camry XLE, 2. Mine made the exact same noise heard in OPs video and everything has led me to believe its pre-ignition. . I've taken it to my mechanic, he told me to try a higher octane gas, which I had already tried and he put some oil treatment in the oil. The drive belt pulley is a vital component that can cause a rattling or knocking sound as you Dec 15, 2019 · I have a 04 Mazda 3 hatch (base model) has around 110k on it and I’m new to the Mazda community i recently was given this car and it has a knocking noise in the right front when accelerating while making right turns that seems to be suspension related to me I have read some stuff about redisigned motor mounts from Mazada and was wondering this is my problem or if anyone can point me in the Jan 11, 2019 · First of all I'd like to say that im not an expert but I'm having issues with my Mazda 3 2010 also a rattling noise under engine load. I've been hearing a weird growling noise when accelerating. going up slight incline, etc. Feb 10, 2019 · So any way I have a Mazda 3 2010 1. Consistent Ticking Noise Aug 24, 2007 · I have exactly the same noise with my 06 Mazda with 104k miles. sr vt wk ws qw to cb xi os sn