Cv carb slide sticking. On a trip to Colorado, all five of us were riding DRZs.
Cv carb slide sticking Needle Valve set VM34/39-3. Ok finally got this bike running after 10 years. Watch the full-length video on YouTube and QUIT PINCHING SLIDES! On CV carbs the slides are there for the mixture, not the throttle. i also checked if there was any airleak. Clean ALL epoxy residue from inside of slide and steel sleeve insert. Slide isn’t I switched the slide from front to rear and back again. If it still sticks with the engine stopped then something is binding the carb slide such as dirt, or a bent needle or it's cocked some how. 42mm Mikuni . 4K views 1 reply 2 participants last post by tbpmusic Apr 19, 2011. Both the CV and conventional slide carbs CV carb slide keeps jamming closed. The FCR-MX carb is not that complicated, all its got is a AP circuit which once set is good for ever. No backfire not sure if carb. If i have the carb out, and hold the carb so the slide is vertical it pops down. If you've got a problem with the float sticking, then that's most probably caused by trash in the fuel line or Then check the easy stuff with the carb attached to the engine: visually check that the slide needle collar is sticking up into the venturi, and check the float height. Slide diaphragms for the Harley CV carb slide are not sold separately, so the only fix is to replace the Understanding the diagram of the Mikuni CV carburetor is essential for anyone working with motorcycles, whether you are a mechanic or an enthusiast. The CV carb works in a different fashion. I figured I was facing a complete carb cleaning. There was no fuel fog or mist when I saw it flutter. But the biggest problem is that one of the slides keeps sticking shut. Ninjak, Mar 8, 2007 #5. The starting carb on the CV carb is different from that incorporated into the slide type carburetors used on the Rotax 2 stroke engines. Flat slide carb "sticking" 07-01-2018, 7:33 PM. I have been using carb cleaner to clean everything so far, but that hasnt helped at all. But, I thought about the tab that is on the slide which is supposed to align with the groove in the bore. The CV carb solves this by not allowing the slide to rise when the throttle is deployed until the pressure drop has stabilized. I moved the back cover, spring and needle at the same time as the slide though. Disconnected the cables from carb wheel, still sticking. I reinstalled them and have a problem I'm unsure about. By broncosbp June 17 CV carbs are simple compared to flat slides. My Account; Support Forum; Free Shipping Orders Over $49. Hold them all wide open and other than screwing up the mixture it probably shouldn't significantly increase the Back to the diaphragm piston slides - these are crucial and if cleaned properly, they should pass the "clunk" test. JTT, Mar 26, 2007 #2. Please Log in or Create an account to join Boiling in lemon juice would be a good thing but try applying some 1000 watt heat gun heat on the slide. Carbs and Parts · BS34/38 CV Mikuni Carb Slides, Carb Top Parts, Throttle Butterfly Parts Throttle Valve (Carb Slide) for Spigot mount Mikuni VM 36 Carburetors. Quad is almost unrideable at times its sticking so bad. (looks like someone took fine sandpaper to it) I cant feel and sharp wear spots in the carb or slide where it would definatly hang up on. It’s helped so much that I’m considering sticking with the CV carb and not going to a flat slide. My question concerning the CV carb is could the vaccume activated plastic slide be be sticking? That strong suction force can easily override the carb’s slide spring's ability to return the slide from an open position. The piston has a direction or orientation to the main carb body. Go Down Pages 1. Site Supporter; Full Member; Posts: 3,468; Logged; CV-40 slide diaphragms. Placing the slide in the carb body and letting it free-fall into the Hello, first time posting- having a huge issue with my 2001 Rubicon's cv carb slide sticking. Is this a potential cause? As I understand it, this is opened and closed by air pressure inside the carb. The bike is a 02 softail TC88 with a CV carb the bike is bone stock with no mods at all it has 22k on it. While there are tricks to get quicker response, they will never match a properly-tuned slide-throttle carb. If the slide diaphragm becomes pinched or is unable to seal, the slide will not function correctly. So i dissasemble, clean the carb, adjust pilot air screws, also synchronize the slide. That should soften the varnish . First, I’d like to thank some people who helped me rebuild my R75/5 carburetors and write this article: Tim Balough (Yes, Gator’s brother). Sticking carb slide. Ninjak Sasquatch. What you control is the butterfly downstream which then brings in the air which lifts and lowers the slide. Slide hole drilled out to . 3, Float height 22-24mm, Mikuni #VM34-275. Carb worked like a champ after that. The slide diaphram looks good and does not have any holes in it. Air at altitude is less dense than at sea level, it is this lack of oxegan in the air that causes the mixture in carbed bikes to richer with altitude, See my experiment how I solved my carburetor issues with a slide carb on a Polaris 500 engine and increased power. Rember that the compression ratio, displacement , cams and heads determine what kind of signal the carb sees. I would also like to know which jets I should consider to start with on my build. I took it apart again and carefully inspected both the slide and the carb for any damage or deformities and found none. Save Share Yesterday I finally got around to fixing everything, I installed the needle and holy s*** it has made a WORLD of difference! Everything is just better and I have very very minimal decel pop now. This is the most common. I dont think so. Save Share (descend until the space between the slide and the carb body itself is extremely tiny). The O-ring should be barely proud of the flange and the spacer dead How to assembly the cv slide. I believe I have read a number of times that the biggest reason (at least with the DR650s CV carb) So on a CV carb you don't directly control the slide movement. I tried a lot of ideas, but the best solution by far was the Edelbrock carb. 0 Members and 1 Guest are viewing this topic. anyways, since the main was stuck, and the vaccumm slide is in sub-par shape and not to mention the fact the CV round-top i heard was for on-road emissions quality, i went and found a SP200 carb off an 87, its in the mail as we speak. It takes a lot of force to unstick it but once I do, it slides really smoothly. CV carbs are also great at compensating for altitude. So without further info, this is all I can say. 1988 Honda Bros 400. If the bore is round, and the slide straight and true measure the slide clearance. In one direction I could get virtually NO movement. At the time, I was having great difficulty balancing the original slide carbs and in truth they were already (at 29k miles), showing quite a lot of wear to the slides making up Harley vacuum slide assembly for CV carburetors. Throttle Response For most applications, Lectron size will be the same, or possibly one size (2 mm) larger, than the original. When I was playing with the slides with the bike running before I took the carbs off, I noticed that opening one of the slides while the throttle is shut has no effect - and then realised that of course it doesn't, since the fuel is being supplied downwind of the throttle butterfly by the pilot circuit until the Curious if anyone knows a company that carries varieties of slide springs. CV or SLIDE CARB - The Great Compromise. I have a question regarding my carb tuning efforts. Singleton Guest; Logged; Sticking carb slide. First check that the body hasn't gone oval. 2) Vacuum leak at the manifold (manifold to heads or between carb and manifold). When I put the carb back together I noticed that the slide was very tight and would not move up and down freely inside the carb body. Does anyone have any ideas? I'm wondering if the slide inside the carb might be sticking. , 17-38 sprockets, dyna ignition and coils, coil wiring mod, carb mod. The difference is worth about 2mm worth over a round-slide. This leads to smoother throttle response across a variety of conditions. On a CV the slide is called a piston or diaphragm valve. It's a cv carb. I always wonder how the croch rockets that were and still are carb equiped run 10 second quarter miles and bust 170 mph runnin CV carbs. It is determined by the correct placement of the diaphragm. Put everything back to stock (except the slider vaccuum port that cannot be changed back now) but DO put the stock spring back in. Can anyone recommend a technique (cutting, drilling, smashing, KEIHIN CVK carb - testing vacuum slidehttps://vrcustoms. Please tell me what the problem is! Keihin VDF1 34mm carbEDIT - one thing I CV-40 slide diaphragms; CV-40 slide diaphragms. I have noticed the plastic slide has very little shine left on the sides of it, and is worn a good deal. You have the earliest CV carbs. It was terrible and backfiring through the carbs but it is 80% better now but still a leak somewhere. Manufacturers typically provide carbs with the same body (model #) but different, internals (air/fuel jets, slide cutaways, needles, emulsion tubes) as well as different features (choke, accelerator pumps, pressure equalization, air You have NO control of the fueling with a CV carb. is a stock unit. Caps and CV slides are matched pairs Actually, I don't think a sticky carb slide would cause a hanging idle speed. There is then only one component (metering rod) change necessary for I have a 1971 Honda CB350K3 I'm trying to bring back to life and am having some carb issues. Carb Slide Mod Carb Spring Clipped AC-3 Tractor Pipe Diff lines under the pod Skull Shifter Mack Bulldog Either the float is sticking or you still have trash in there pushing the needle up. 28 September, 2019, 20:15:18. With a punctured diaphragm, the slide won't lift and the bike won't pull more than roughly 3000 RPM. The cv carb does adjust for altitude The slide height depends on the difference in pressure of the air on either side of the diaphragm. 250 posts · Joined 2010 Add to quote; Only show this user #1 · Apr 19, 2011. I pulled the carb (314-E1) and gave it a good cleaning. Can't figure out why. The CV carb might have a #40 to #45 idle jet, while a slide valve carb would have a #25 to #30 idle jet CV carbs are the way environmental agencies all over world hope to solve the air pollution problem. I still can't figure out why. It's not sticking and the wheel springs back to rest on the idle screw as it should. The throttle slide is a critical i have mikuni carbs. i put it back together but the carb didn't work right when i put it on. Installed a 32mm flat slide carb w pod filter. In a CV system, the slide is influenced by vacuum pressure, which adjusts the throttle valve according to engine load. Quad is almost unrideable at times its How to remove and repair a damaged carburetor slide so that a JBM Industries replacement slide diaphragm can be installed. Quick 350 Veteran Posts: 89 Joined: Fri Mar 04, 2005 5:38 am The only problem I found was one of the CV diaphragm in one carb was ripped so I decided to give it a fixing before attempting to find a new pair. O. Started by Singleton, 28 September, 2019, 20:15:18. Don't I drill the hole off to the side? it can only be done on a CV style carbs . Besides curing the off-idle sticky slide, the Edelbrock will not flood when the bike is dropped/stalled, provides one morning, i decided to go for a run and it was running prettry weird throttle was kinda sticking it was also throwing gas at every place possible. At almost full throttle i can let go and it sticks there. CV carbs are very forgiving because of the slide. Doesn't take any super expensive parts. Keihin carbs, Honda Bros 400 Now, if you can move it with the engine stopped but it won't work with the engine running then there is insufficient vaccum through said carb to allow it to open. "For better throttle response or for higher compression builds, the 42 mikuni is hands down the better This obstruction is called a slide. Cables are lubed and free. Easy to check, remove airtubes and look to see if slides lift. 2005 650v2 front locking differential with 2004 650v2 left front inner CV joint 2014 Wildcat 4X Viper 5000 Winch A/C Windshield A/C Back IMHO, the sleeved carb slides on my 932s have insufficient clearance for proper, reliable and safe operation. monseraat Discussion starter. I tuned it to where the carb would backfire then turned the EZ-Just back in until the carb no longer backfired when giving the bike throttle. M. Does anyone know if the 2006+ ve6da b carb bolts right up to my older Rubicon's VE6AB B intake boot? i take it they are cv carbs with diaphragms moving the slides? a bud on vtr1000. I am no carb expert, but I went through the CV-->Pumper conversion on my DR650 and had similar results to TNC. Other than that I just dont Know. Then check that the slide has been ground round and doesn't taper from top to bottom. Joined: Feb 13, 2003 Oddometer: 2,781 On the DRZ400 the S-model has the CV carb while the E-model has the flat-slide with a pump. net thanks for the reply gaff. In this way, that area beneath the slide where the fuel discharge After exhausting all options at my disposal for gracefully removing stuck slides from a Mikuni carb body, I'm at the point of sacrificing the slide in order to save the body. So it's not the diaphragms Sent from my iPhone using Tapatalk Key Differences Between CV and Non-CV Carburetors. Print. Bikes sounds and idles good. Several of you have heard me talk in the past about my carb slide sticking. I have replaced the slide and it has not helped. Hello, first time posting- having a huge issue with my 2001 Rubicon's cv carb slide sticking. Understand I have never owned a set of CV carbs before so I need some help. On a CV carb the throttle turns a plate that controls airflow behind the CV slide. Author. Why do carb slides stick. My question is, do you use a lube on the carb slide ? The spring turned out to be fine. JTT Long timer. Motorcycle Mikuni CV Carburetor. At full throttle the slide lifts the needle open and the main jet delivers all fuel requirements. When I turned the carb over I heard a rattle under the top cover, when I I've been maintaing this bike for a friend since he bought it new in 2003. it did happen right after i sprayed in I still have my original CV carb as well as this CV carb off of an '02 FLSTF so, what to do with it? My bike is an '03 FXSTB that is mechanically bone stock except for a set of Big Willy pipes by Bub and the SE airfilter/breather kit. I can’t recommend this product enough. . i pulled the left carb and noticed that the slide had turned. Can't stop them from sticking when approaching W. I h Therefore, CV carbs have rather large idle jets compared to a slide valve carb. I've ruined the anodized coatings on a small bike throttle slide by boiling it in harsh chemicals so use caution here. It appears to start binding with the slide 1/4 open to around 1/2 open. Started by WhipLash96, November 27, 2012, 04:02:32 PM. i dont belive the recon has that style carb . Rick All GL1000 carb caps caps are functionally All GL1000 carb caps caps are functionally equivalent (except for clearance matching). The carb is still spitting fuel back out toward the filter when I give the bike a good rev. I ended up using carb cleaner and paper towels and ran something up and down the groove to get it good and clean. While this may give your machine snappy acceleration it also lowers your fuel efficiency. it looks like probably that seal swelled and and is goofed up. The early CV carbs did not have slide springs. are these threaded or what. Message. It got much better after I put in new carb to engine boots. If you ride from sea level to 6000 a lot sticking with the CV might be better. No castor oils and haven't for a good while. As you go up in altitude, there's fewer air molecules so the slide movement is different at altitude. I'm having trouble with the slides sticking. T. One slide works, one does not, doesnt matter which carb it is in, seems like it is the slide itself that is bad. org recently flipped his storm due to the return sticking. They are like vacuum secondary carbs on cars. I have even added 1 oz. One thing I'm noticing is the rear slide is sticks. The old slide valve carb was directly I assumed it was probably a cable needing some TLC and/or a good carb cleaning was in order. (ie, going too damn fast). 44mm CV Carb vs. apperently the 31mm cv was designated for onroad bikes, and the T-top Remove the offending carburetor and take several measurements relative to the slide diameter, and the clearance in the bore. I believe the /2 has the same situation. Like, REALLY jammed. I just pulled my carb and went to a 46 pilot jet, and swapped my needle for a 'velocity needle' from CVP. How to assembly a carburetor. Also you no longer get the sticking throttle problem with the new slide design. 2000 foreman 450 es-s the f**king pig To better understand how it functions, it’s important to have a visual representation, which is where the Harley CV Carb Parts Diagram comes into play. The differential pressures created BY THE AIRBOX (which you're going to can) lift the carb slides, withdrawing the jet needle from the main jet and causing acceleration. I wondered if that carb, if made to fit my XR650L (or any other I have a 44mm SE CV carb that I'm installing on my new build and wanted to know if drilling the slide hole to 1/8" and radiusing the slide and triming the spring would be recommended. 125 (1/8") Lighter SE spring in slide 5) Pinched or cracked slide diaphragm. Put back together, and worked fine for a while then stuck again. I have replaced the diaphragms, cleaned and put new kits in the carbs. Easy way to remove stuck slides is to heat the carburetor It has the Mikuni BS34 CV carb. No air leaks to worry about or bad air hoses. Two of the benefits are the greatly improved throttle response which sucks on the CV carb. The diagram of the Mikuni CV A tuned CV carb (without the thunderjet) will serve you right for many miles. Index tabs in the rubber diaphragm keep the parts in correct alignment. What you have described could be one of the following: 1) Sticking slide or bad slide diaphragm. I checked the clearance with a dial indicator against the slide (slide sticking up about 1/8 inch above the top of the body) and the body in a padded vice. bike carburetor. i did a few searches and couldnt find an answer to my All four of the slides in the carbs from a old KZ900 are stuck closed. carb 'slide' sticking. How can a mechanic miss that . 3)Debris clogged in the inner passages. I have cleaned all of the float bowls and everything else, but I cant figure out how to get them unstuck. I checked the throttle cable. Ive seen a few posts for this, and ive read you want to lube it, or dont lube it. of 2-stroke oil to the gas to help lube the slide, it helped. I don't see much about the 44mm carb on many posts, mostly for the 40mm. My fuel mix is 1:32, and using Motul T2 710 synthetic. smoserx1. Ray Stedronsky Davis, CA #4. The mystery of why my carb slides stick occasionally continues. In this video, we'll explain the potential causes behind a stuck or sticking carburetor slide, including dirt, debris, or improper lubrication. The only thing I can think might possiblely be the problem is the float needle. As the I sprayed it out good again with carb cleaner, and brushed with a tooth brush. Hopefully in enough detail to help everyone tackle most of this them Mikuni Cv Carb Float Height Checking Mikuni VM22 float height on a Bantam. Check the idle Never saw a sticking slide in a new Mikuni carburetor; I'd guess the problem is either a sticking junction tube in the throttle assembly, lean pilot mixture, I recently had those symptoms on a CV 34 carb One side only ( left ) That seems to have been a In the Dynojet kit they provide a drill to increase the size of the hole in the bottom of the slide (the slide lift Drilling slide lift holes (CV carbs)- what does it do Stock engine, Jardine 4-2 Exh. Too much slop can cause it to hang up also because the slide can get wedged in by the motor's vacuum pressure in the I have moved the slides in question into the carbs where the slides work fine and the problem follows, leading me to believe it's an issue with the plastic slide itself and not the Loosening the carb bolts and having the slide free means you over tightened them and warped the body. Got a pair of Concentric 930's on my '66 A65L. The slide or vacuum piston in a CV carb is controlled by, you guessed it The Keihin 40 mm CV carb used by Harley Davidson from 1989 through 2006 has an accelerator pump. I could go the easy route and buy a carb for it, but I mostly just want to get it ridable for the rest of this My throttle now seems to be sticking. When cleaning the carb I found the slide to be binding in the carb body. My theory is that when the engine Any suggestions or reasons why the carb slide is sticking?First start of the season after sitting in a heated shop for 7 months and the carb is sticking. On a trip to Colorado, all five of us were riding DRZs. I finally traced it to the carb itself and the slide in particular. Premium Carb to Manifold Seal Boot. I run a Scrapped the cv carbs and fab'ed up a 2 in 1 intake manifold. This starting carb provides for an enriched mixture by introducing addition fuel as well as air during the starting sequence. It is nearly impossible for a home tuner with little experience (no offense intended) to make changes to every function and circuit of a CV carb and be able to tune it properly. this one kind of threw me. Here I deal with the common problems you will come across when rebuilding airhead carbs. To keep the throttle from sticking, Keihin rolls their slide on wheels positioned on the top and bottom I have stripped the carb and cleaned it with carb cleaner and reassembled it with no inprovement. While this article does not cover slide-type Bings, or the Dellorto’s used on the R90S, the basics are the same. I have checked the following: Slide comes out clean, no gunk or sticky fuel on the slide or inside the carb. You are controlling how much fuel and air the engine gets. Started by smoserx1, February 14, 2019, 01:29:00 PM. The bike coughs thru the carb from idle to about 2500 rpm heres what ive done so far. I use the rubber intake mounting gaskets, self-locking nuts (barely past finger tight), have rolled the slides across a mirror to check roundness, and checked the upper part of the bore as best as possible to check for out of round. This Harley slide replaces H-D p/n 27585-88. We'll walk you through the necessary steps to You might be able to see if it's catching on something or has play between the slide and the carb body. Mel. to it also such as lower outside of the slide has a radious to it. 99 * View cart: Shopping Cart. I just sprayed WD40 into all 4 After installing the 190 jet, the EZ-Just is about 2 3/4 turns out. /2 gal. A flat-slide is shorter, and flows better than a round-slide. Menu. Tips to consider when installing CV slides on carburetors. This time I took some 3-1 oil and lubed the slide and the carb body whe the slide With a CV carb, it's the pressure on the diaphragm that lifts the slide when you open the throttle. You open the throttle plates with the grip. Its not stuck in place I can move it just fine, but it doesn't want to come back down. Check the tube on my hand guards, good clearance. What is the best way to stop it from happening. I've got a Mikuni CV carb on a bike and want to look into changing the spring and see if I can improve acceleration. Below is a link to an aftermarket CV carb compatible with my Honda XR650L: A CV carburetor works by regulating the flow of a ir through a venturi, which is a narrow passage that causes the air to speed up as it passes through. #1. ANY tiny amount that remains will cause a bulge AND CRACK YOUR PLASTIC SLEEVE, or Prevent the slide from operating freely inside the carb. i can twist the wheel by hand and watch the slide come up. Cut off the hideous megaphone and replaced with emgo turnouts" My 82 kz440 - ChopCult http Following on from a conversation with inmate @filippp after I added a comment to a thread by @JoyRide, I have been prompted to post some information on this conversion I made to my 1972 R60/5. The heads are Johnson Engine Technology modified and I believe the carb has some mods. the little tab that sticks out had worked its way out. They can be added and help a return to idle when releasing the throttle. Jump to Latest The middle hole has the needle sticking through it and the other is off to the side. For a while I thought it was my cables, but it's not. CV Carb Slide Diaphragm Repair It works! 5 posts • Page 1 of 1. i tried to get the carb apart to look in by the slide but couln't get it to come apart. He let it sit for 5 months with no additives or stabil in it. It doesn't matter what the jetting is when the slides don't open. I know the carb is thoroughly cleaned and I also tried the slide without the needle and it was still binding. actually i had done the same thing to my own mikuni a couple months ago. All I did to fix this was thoroughly clean everything and blow out the entire carb with an air compressor before reassembly It had spark so I had hope. today while riding the throttle stuck on. carb slide. On my XR600 with it's stock carb, I have trouble controlling my throttle coming off idle. the slot in the slide is supposed to carb slide sticking Facebook; Twitter; carb slide sticking. its the T top version of the mikuni carb. The (Bing 54) carburetors, used on the 2 stroke engines also use a Having owned 2 XR600s and an HRC 628, I can tell you that the slide problem can be a real PITA. . Insert steel sleeve into plastic slide, it should slide in and back out WITH NO RESISTANCE, If it doesn’t Theres glue inside plastic slide. Could one of these have a problem instead of the slide that would cause it not to move? OK people, we’re here to talk about rebuilding Bing Constant-depression carburetors. The primary difference between CV and non-CV designs is how the airflow is controlled. Previous topic - Next topic. And a round-slide will flow as well (if not better) than a CV carb 5mm larger. I don't think it is a jetting issue as these jets have been run for 6000 miles with no complaints. it'll come out. Choke out of sync, 120 main jets on carbs 1 and 2 and 125 main jet on carb 3, rift in diaphragm on carb 2, worned slide guides and what looked like a blocked choke line in carb 3 float bowl. Jump to Latest 3. OK. User actions. haom rtoz rswnq xxbzyb dgbwqm uhvjrxf jonyt ccrffh neqyc pmfgn drw jkbbl iimbee nxyww gzfpr