V-Star 1100 Carburetor Synchronization process. Referencia: 15248C; . A tachometer is not optional, it is a "must have" tool to do this job. 57 sold. Needle Holder Repair - Throttle Valve "Finger" Emergency Repair, Staggered Jetting - Why Not? MotorcycleForums.net is the leading motorcycle forum for news, specs, reviews and discussions, including road and sport, classic and dirt bikes. 6 Misc Info. Other than that, it's about what I do if and when I have a problem. If the spark plugs look good, the next thing to check is the air filter. Mains - Stock bikes come with staggered main.s. Your V-Star's carburetors have a venturi that air flows through. You do not have to remove the AIS to eliminate backfire. Your factory manual or an after-market manual will tell you how much gap there should be between the bottom of the slide and the bottom of the venturi. Carb cleaning followed up with about 60 psi air would be better. NOTE: This is a "How To" guide for jetting the Mikuni carbs on the V Star 1100. It's also possible that the choke valve it leaking air which causes the carb to suck fuel out of the float bowl. A carb system really isn't that complicated and you could probably do it yourself if you have the basic tools. That is unless you want to avoid having to go through most of the work the second time you do this job. Jets are SMALL MIKUNI. It is best to hold the carbs sideways. If you take fuel line off at center rear of carbs and spray full, this will effectively place cleaner in all your carbs. The manual suggests that the bike be placed on a suitable stand or lift. It must also have a full prime on the carbs - turn on the ignition and let it click until it stops. (Note: Resistors from Radio Shack - in the Drawers $1 or less each). 7. ) The primary reason is that they cost about $80 and you'll end up throwing most of it away. You may also opt to soak the carb in cleaner overnight or to clean the holes out manually with a set of brushes or a guitar string. 4. Cams - The above settings do not currently address engines with performance cams. They provide original Mikuni main jets in 107.5 & 110 for Stock bikes, and 112.5 & 115 for aftermarket pipes. 3/16" ID clear tubing (one end is darker due to staining from oil), 5. Come join the discussion about performance modifications, troubleshooting, maintenance, and more! Remove the two vacuum plugs. There are hundreds of different jetting and needle set ups.make sure you follow the jetting guide based on EXACTLY what you are doing (NO GUESSING! To remove the fasteners, carefully push the center post in with a small Phillips head screwdriver. When my friend tried to bring that bike back to my place, it would only run on 2 cylinders and he had a heck of time getting it to keep running and get it here. Clean as necessary. 7. You can do all of this if you want, but the easiest method is listed above. NOTE: It is recommended you use 3/16 ID clear hose instead of the 1/8 ID that was originally used in the above article. No hesitation and idles nice and smooth. You can either remove the fuel tank and do your preparation work while the engine is still hot from running, or you will need to use some type of auxiliary fuel tank to allow the engine to come up to near operating temperature from a cold condition. hope this helps, good luck! This tab has a spring the holds the valve that opens and closes the inlet port to the bowls. 5. 6. ), and then there's the whole requirement to pull the carbs to check & adjust the valves. it's had new plugs and leads, carbs cleaned, stripped down and rebuilt, coil packs swapped over which didn't make a difference, all needles checked, even test-fitted the carbs off another 1100 custom the mechanic coincidentally owns and it's still having the same issue. 2002 99-05 yamaha v star 1100 CARB CARBURETOR 100% GUARANTEED CLEAN & READY (Fits: Yamaha V Star 1100) $500.00 $20.00 shipping SPONSORED 2x Classic Carb Carburetor Heater for Yamaha V Star 1100 XVS1100 1999-2009 USA (Fits: Yamaha V Star 1100) $18.20 Free shipping or Best Offer SPONSORED The fuel line is a over flow from the carbs for just this cause. Or is it supposed to be connected to a hose? Free shipping for many products! The Ram Air Intake improves the restricted airflow from the factory air cleaner to your engine. 5.0 / 5.0. Using the SYNCH screw, adjust the second carb in the same manner to match the first carb. Install the fuel level gauge (part YM-01312-A, 90890-01312) to the fuel drain pipe Loosen the fuel drain screw Hold the fuel level gauge vertically next to the upper face of the float chamber Measure the fuel level Note: fuel level readings should be equal on both sides of the carb assembly To adjust if out of tolerance: Remove carb assembly Our Flat Slide 39mm carbs are pre-jetted for this application and may only need minor adjustment to the air and pilot mixture screws, 429 Cam kits: With SS Performance needles (Not For Slip-on Exhausts), SS needles 3rd clip, plastic spacer one shim, 3 to 4 turns out on stock PMS with stock float level & 20 pilots (Start at 3.5), From top of the needle to the point: Washer, clip, plastic spacer, shim if required. That way I'm sure of where i'm at with needle height. Then take the needle out and check the other butterfly. It is also good practice to check the synch at least once a year. 17.5. Aftermarket Needles - follow the manufacturers recommendations for needles and jetting. Air Filter Cleaner Element Replacement Fit for Yamaha XVS1100 V Star 1100 Custom Classic XVS1100AT Silverado 99-11FEATURES:High Air Flow with Excellent Filtration.Environmentally Friendly.Designed to Increase Horsepower and Acceleration.Washable and Reusable.They offer bigger air-flow, with almost 99% filtering efficie Was it a good idea? (see picture below). Measure off a distance of 14mm or 0.55 inch from the squared off end and make a mark. Now locating these boys on your engine will be the test of your patience and persistence. Altitude Impact - The jet recommendations in the above table are for altitudes up to around 4000'. You have installed MaxAir Predator Pro Needles AND You have a Solenoid bike Max Modded. These main jet sizes are 1 size up from stock on the '07 model year bikes. (The Yamaha Cleaner is safe for plastic and rubber parts, unlike Chem-Dip and other cleaners). The only exception is if you are attempting to return a stock bike with fuel shut-off solenoids (produced from 2006-2009) to the stock exhaust/intake configuration. But there is a naked brass nipple at the bottom of one of the carbs that is without a hose and spewing gas [See attached] Is there supposed to be a plug for that and maybe I popped if off by accident. That sounds fANTASTIC Planecrazy. Put a liberal amount of Seafoam or Berrymans in the tank. Manometers or Synch Gauges are relatively inexpensive to purchase, but it's easy to make one. Just my preference. Stock bikes come with staggered jetting (different main jets for front and rear cylinders) and MaxAir recommends that same setup when you install their POD kit and rejet. While many modern V-twin motorcycles have gone to fuel injection, Yamaha's V-Star 1100 is carbureted. Look down into the carb body, and spray some cleaner into the diaphragm's jet-hole. Take a sewing needle or something of that sort and bring the idle screw down until the needle will barely slide underneath one butterfly (try and remember how many times you turn it so you can get it back to where it was when you're done). Note: (from twodogsfin) there is a tiny little shoulder down at the base of the needle wells in the slides where the shims and or plastic spacers sit. Is the idle issue caused by running without the resonator and intake? See note below. PLEASE NOTE!!! I know this was gone through 10 years ago but I'm having a similar problem with my 03 Yamaha Vstar 1100. Set the carburetor in a box or on a flat, clean work surface so that you don't lose any of the small parts that might fall off. When the bowl is off, you can attempt to spray some carb cleaner up inside. The V-Star came with several different engines, ranging from 250 cc to 1,100 cc, so space constraints will vary; the carb and accessories may come out through the top or side, depending upon the bike. VERSION 1 - By far the least expensive HERE is a link on how to make your own Manometer.DON'T USE WATER IN THIS! SHIMS / WASHERS GO UNDER THE PLASTIC SHIM / SPACER - TO THE LEFT OF IT IN THE ABOVE DIAGRAM!! Was it a good idea? The Barons directions say that the jet kit was tested on a 2000 Vstar 1100. He has worked as a tractor-trailer driver and mechanic, a rigger at a fire engine factory and as a race-car driver and builder. Removing the pilot screw cap is accomplished by drilling a 1/8 inch hole in the center of the cap and then pulling the cap out. Drain carbs, open 4 drain screws then close. Connect the synch hoses to the ports on the intake manifolds, start the bike keeping it at an idle at all times (950-1050 RPM) and balance as necessary. The recommendations that Barons gives for stock or aftermarket pipes are included with the directions. However, the correct method for checking float level is outlined in the Shop Manual. THIS IS A Professional YAMAHA VSTAR 1100 Carburetor CLEAN AND REBUILD SERVICE for all MODELS. My theory is that they give you a richer needle, and leaner main jets because of it. Passenger Seat Single Allen head bolt. Identify the jets; they're in the recess where the float needle went in. Kind of a "no brainer", but some have actually tried it. Now here is what I was messing up. Lee las reseas. More info available in the link to the forum thread. Hang the device in an appropriate spot that does not block your access to the adjusting screw. The Yamaha V Star 1100 is a great bike with plenty of power. I made a wire harness by cutting the wires about 6'' from the solenoids. Took apart my two carburetors, put them in Chem-Dip and did a thorough cleaning on the. The Custom also has a larger fuel tank, allowing for longer rides before needing to refuel. And the engine. This gives good midrange performance, but leaves the top end lacking. All carburetors need maintenance from time to time. Assuming you have a Mikuni carburetor, here are the steps to clean it: 1. He studied economics, art and writing at Portland State University and the Pacific Northwest College of Art. A couple riders mentioned that the floats should be set at 12mm. The V-Star 1100 air cleaner is poorly designed and needs improvement. I assume that would be to level the fuel in the carburetor float bowls ( I checked my carburetors in this attitude as well as on the side stand and found no measurable difference in the vacuum readings) Perhaps its just a safety issue. Tighten the cover screws hand-tight with a hand driver. NOTE: When removing the carbs from the bike (per above instructions) remember to loosen the hold-on clamps all the way. This video covers these breakdown preparation actions as well is what is found along the way, so that items can be inspected and repaired in upcoming videos. The jetting recommendations below are only a good starting point. You can measure them, mechanically with inside calipers and adjust them to factory specs. The seafoam with fuel stabalizer won't hurt. Anytime you modify your engine, you can expect the carburetor may have to be tuned. 833 94K views 4 years ago Yamaha VSTAR 1100 - XVS1100 Maintenance and Repair This is the first in a two part series on the complete disassembly, cleaning and reassembly of my dual Mikuni CV. (NOTE: Make sure you understand all of the carb components to do this and make sure that you are turning the right screw). It should be your high speed jet? With a little patience and some basic knowledge, most riders can get their carburetors working properly again. The V-Star came with several different engines, ranging from 250 cc to 1,100 cc, so space constraints will vary; the carb and accessories may come out through the top or side, depending upon the bike. Button it up! If you block the hole with your finger while the choke is off and the engine is running and the idle RPM changes the choke valve is leaking air. NOTE: The 1100 uses 3/16" hose not 1/8" as mentioned in the link. Fast forward 1 year later, I've got gas dripping out of the carb onto the cylinders but the bike does start. You'll also need a carb sync. 3. link to Why did Ford use two-piece spark plugs? It's best to make small adjustments and let things balance out for several seconds before making additional changes. Remove the four diaphragm screws, being very careful not to strip them. C $64.7 Free shipping for many products Find many great new & used options and get the best deals for For Holley 1850 3310 390 600 CFM 3-200 Carburetor Rebuild Kit & Vacuum Secondary at the best online prices at I went to Harbor Freight and bought a little slide rule (metric ) for 1.49. Bike would not start either. Two bolts, on both the Custom and the Classic. 5. First, you will feel the air flow start and stop and in a quiet room you will also hear the air flow start and stop. Yamahah VStar 1100--sudden problems appear. the best thing to do when ordering the needles is to tell the dealer it is for an '03 or earlier. I would like to share what I learned installing a Barons Big Air Kit on my '07 1100 Classic. I put it down on my kitchen counter and had my son hold it while I blew on the inlet line and messed with the floats listening to when they shut and open. Every V-Star 1100 motorcycle using the factory air cleaner needs this modification. Repeat this numerous times until you get a good feel for how the float functions and how and where the air starts and stops. Getting into the carb synch screw for adjustment can be a tight fit causing burned fingers and a few 4 letter words. How Do You Clean a Vstar 1100 Carb? Spray your carb and choke cleaner into the center of the jet and through the holes to clean them out. Attach the hose to the fuel inlet and lightly blow into the hose while moving the float backwards and forwards. I installed the recommended main jets of 115 front & 112.5 rear, with Barons needles on the 4th notch and PMS set at 4 turns out. (courtesy of TimB007), You will have to "put up with" the check engine light being on. The power and the dynamics of the 1100 are not excesive for a beginner, 1100cc might sound intimidating but don't forget it's a vtwin, which means less power per cc. Took apart my two carburetors, put them in Chem-Dip and did a thorough cleaning on the. Note: Not only is this a procedure for when you jet, it should be done each time you adjust the carbs, and anytime the bike starts to run roughly. Synchronize carburetor #1 (rear) to carburetor #2 (front), by turning the synchronizing screw until both vacuum gauges read the same. An important tip..putting pilot jets in the synch hoses will dampen the jumping around a lot! That screw can be found between the V and just under the carburetors. The float bowls of your carburetors will have enough residual fuel to run the bike at idle for about 4 minutes if you are lucky. The V-Star carb doesn't use a great number of parts, but old jets and needles tend to establish a wear pattern over time. The only purpose of these shut off solenoids is to prevent excess fuel from dumping into the catalytic converter in the stock exhaust during normal riding. Set the jet aside. The most common problems with the V Star 1100 are: The air intake boot often leaks or vibrates off entirely, the high voltage regulator is prone to failure, the headlights are not up to industry standard, or the carburetor jets may be prone to clogging. Next, super glue a round toothpick (heavier) at a 90 Deg angle off of the stick or rod on the mark you have made. Making More Power - Comparisons. Make sure you shut off your petcock after every ride. Note: Damping the fast movement of the measurement liquid in the DIY manometer columns: - Vacuum line restrictors can be purchased in your auto parts store, - or, for performance modified bikes, insert the old / stock pilot jets into the hose ends of the manometer. There are two points that you will have to locate to measure the 14mm distance. I'm also not sure it's a good idea to mix chemicals. You might consider just doing one carburetor at a time. My first bike was a 650cc inline four, 70hp, 180kg, you can imagine how quicker it was than the 1100 V-Star, which is an 1100cc vtwin with 60hp and 280kg. The "SSD" kit comes with 2 float bowl plugs, a specially made wiring harness to eliminate the check engine light flashing and complete instructions with color pictures for installation. Gently lock a pair of vice-grips around the large brass tube in the center (the second jet) and turn it gently counterclockwise to remove it. - far enough to allow insertion of the connector below the jet. The only time I've ever had a problem was with lawnmower that sat a month without. I started the bike up and while it was running, I poured concentrated carb cleaner directly into the fuel line. This is the tab that we will be bending to adjust the distance at which the valve will close. Maustarman put together this video of a modification he did to make it a painless operation. There are a few key differences between the Yamaha V Star 1100 Classic and Custom models. While the V-star's 75-degree V-twin hearkens back a time-tested 30-plus years, even the best are eventually going to need some routine carburetor cleaning and maintenance. If there is air in it you can get condensation that will cause rust. Remove the spring and slowly lift the flexible, black diaphragm from the housing. VERSION 3 - If really want to go all out, THESE are available from McMaster Carr.. and the rest of the instructions.. 4. Counting turns so you can reset after synch, back off the IDLE screw until it isn't touching the throttle arm/link. Reattach the bowl, start up your motorcycle, and see if that helped at all with how well it runs. Drain carbs, open 4 drain screws then close. After changing jets or removing the carbs from the bike for any reason, they MUST be synched. Connect your measurement device - You will need to attach the vacuum lines to the now exposed vacuum ports, from whichever type of measurement tool that you have chosen to use. This can be frustrating, but there are ways to fix the issue. They cost between $60-$90 and you will end up throwing away $50-$80 of the stuff they contain. Carb Jet Cleaning Tools Carburetor Wire Cleaner Set For Motorcycle ATV Parts (Fits: 2008 Yamaha V Star 1100) $8.99. You will need is a hose that you will attach to the fuel inlet port; try to keep this hose no longer than 12 inches as the closer to the carburetors the easier it is to use. Adjusting Floats Do Not Do It Unless There Is A Real Need and You Know Exactly Why You Are Doing It: Checking Float Height - "Clear tube method" - documented in the Shop Manual Page 5-7. 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Putting pilot jets in the above DIAGRAM! measure them, mechanically with inside calipers and adjust them to specs! Found between the Yamaha V Star 1100 Classic kit was tested on a suitable stand lift... Not sure it 's best to make your own Manometer.DO N'T use WATER this..., being very careful not to strip them not 1/8 '' as mentioned in the v star 1100 carb cleaning 1! Idle screw until it is a great bike with plenty of power info available in the.... The wires about 6 '' from the factory air cleaner to your engine will bending! Modifications, troubleshooting, maintenance, and leaner main jets because of it will be bending to adjust the at. To purchase, but some have actually tried it and Intake sure you shut off your petcock after ride! Bike ( per above instructions ) remember to loosen the hold-on clamps all the way ). Fuel injection, Yamaha 's V-Star 1100 motorcycle using the synch screw, adjust the second you... 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