Test the throttle blade mechanism to make sure that it's still functioning. The bike is is running like a top now. John Willis founded a publishing company in 1993, co-writing and publishing guidebooks in Portland, OR. Float Tool Options: Some folks are using a metal metric pocket ruler with a T-slide for their measurement tool - picture below. Once you have the carburetors assembled and installed on the bike you will find that adjusting the PMS screws and idle speed has greater sensitivity and dont forget to sync the carburetors to each other. 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 B. My theory on the needles and main jets in the Barons kit: I found the recommended main jet settings that they provide are a bit too lean. After changing jets or removing the carbs from the bike for any reason, they MUST be synched. LV-10 CARBON FIBER for APRILIA TUONO V4 1100/FACTORY 2021 - 2023. Synchronize carburetor #1 (rear) to carburetor #2 (front), by turning the synchronizing screw until both vacuum gauges read the same. This tab has a spring the holds the valve that opens and closes the inlet port to the bowls. Armed with the knowledge that the main jet only effects the 3/4-WOT range, which was the flat spot in the throttle range, I put the stock needles back with 2 total shims, and upped the main jet size to 117.5 front & 115 rear. 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. They cost between $60-$90 and you will end up throwing away $50-$80 of the stuff they contain. The only time I've ever had a problem was with lawnmower that sat a month without. Put a liberal amount of Seafoam or Berrymans in the tank. 1. ), and then there's the whole requirement to pull the carbs to check & adjust the valves. Free shipping. or Best Offer . This is not optional.it is mandatory to insure proper tuning. Hang the device in an appropriate spot that does not block your access to the adjusting screw. -- stock exhaust cast elbow at the back of the head. Many V Star 1100s backfire, especially when theyre first started up after sitting for a while. Fuel Hose - Turn fuel selector to off, compress the fuel hose clamp and pull the fuel line from the fitting. Remove the seat from your bike and close the fuel petcock valve. Others make there own. If the stumble starts to return then drop to a 17.5 and start with 3 turns out. Cleaning; Polishing; Engine Stands; Roadside; Shock Tools; . This can be frustrating, but there are ways to fix the issue. Remove the four diaphragm screws, being very careful not to strip them. Mains - Stock bikes come with staggered main.s. The least time in it the better! These are footnotes. You may have to use adapters that came with your measuring devise depending on the type and size of the devices vacuum lines. By The 2 Links Below Are Required Reading For Anyone Not Familiar With These Carbs ! 5.0 / 5.0. Altitude Adjustment - Main Jets - drop one size for every 2000-3000 feet rise in elevation. Attach the hose to the fuel inlet and lightly blow into the hose while moving the float backwards and forwards. Carb Jetting. Most work conducted on this bike is done breaking down the unit in such a manner that the carbs can be removed, providing access to the carbs, the tappets and other maintenance and inspection items. There are a few things you can do to clean your carburetors and keep them running smoothly. Note: folks on the forum do not think much of this option - especially if you have any air mods - see the thread: http://forums.delphiforums.com/yamaha1100/messages?msg=13808.1. I got so good at taking them out after a test ride to make just one more change that I think I could have done it blindfolded with one hand tied behind my back .. the first time just that took me half the day! 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. Google Sites. I would like to share what I learned installing a Barons Big Air Kit on my '07 1100 Classic. BG. A dental mirror may be of help. The manual suggests that the bike be placed on a suitable stand or lift. If the motorcycle has been in an accident or is being sold by a second owner, the values will be lower. There are enough cases of negative results of this adjustment if you are using the stock needles to suggest you should NOT perform the float adjustment unless your bike exhibits performance problems. Now locating these boys on your engine will be the test of your patience and persistence. or Best Offer. This is not really a big deal as it can be solved doing a comprehensive maintenance, something I do anyway on this 2001 Silverado edition. Speedometer lead connector You will find the connector under the Igniter plate. Blow some carb cleaner through it or soak it as you did the first. Igniter plate ( Spelled Ignitor in the manual) This assembly, with a rectangular electronic module on it is held on by three (3) quick fasteners. This will make it much easier to get the carbs back into the bike. The problem with removal is that the check engine light will flash a trouble code (57 and 58) if it can not find them hooked up in the system. I would say that a little air here and there after the cleaner sits for 5 minutes, and then followed by more cleaner, might help out a bit. 6. ) Get the best deals on Carburetors & Parts for 2006 Yamaha V Star 1100 when you shop the largest online selection at eBay.com. 1 Answer Yamaha v-star float bowl adjustment Fuel leaking out of the over flow, everyone saying the needle and seat are bad or need to be cleaned but couldnt it be float level Posted by James rau on Oct 11, 2012 1 Answer Anonymous Master 408 Answers No. These main jet sizes are 1 size up from stock on the '07 model year bikes. Once they are balanced (the fluid or vacuum is not moving one way or the other) you're done. 9. ) Button it up! Carb synching and cleaning information is in the MAINTENANCE section or click here > Carburetor, "The wKB" V-Star 1100 Wiki Knowledge Base, http://forums.delphiforums.com/yamaha1100/messages?msg=55529.1, You will need to insert a bolt in the hole from which the solenoids were removed - the 8mm socket head fits fine, the head fits into the recess in the carb. ** - Simply turning the PMS out an extra 1/4 - 1/2 turn will increase the mixture throughout the throttle range on these bikes. -- front cylinder will run cooler than the other due to it being out in direct airflow. ), Note: Not all carb manufactures call parts the same name. The base, or resting position of the slides can get out of synchronization, so the cylinders are not working in perfect unison, which robs power and fuel efficiency. Starting with a 20 pilot and 2.5 turns out, try to clean this up by opening the screws 1/4 turn at a time. Refer to Table A for ALL other recommendations!!! 20's may be a bit too rich in most cases, but are still listed in the jetting chart as an option. Take a look down the venturi; measure it with your dividers, then measure the gap of the dividers. since the rear is running hotter it will require less fuel for the same AFR ratio as the front. 1st of 4 tear down videos: https://youtu.be/kcQYS1Er-8IAlso for more common service/repair Yamaha Vstar videos check out: https://youtu.be/-zw_I5M2pCAhttps://youtu.be/77YLmhXN790https://youtu.be/7lfI9f8OScIPatreon https://www.patreon.com/midnebraskamotorsportsInstagram https://www.instagram.com/midnebraskamotorsports Check out my eBay store at stores.ebay.com/midnebraskamotorsportsShop for parts at: midnebraskamotorsports.comWe Disassemble: Clutch Head Cover Cylinder Piston Stator Points Rotor Magneto Generator Alternator Coil Camshaft Cam Chain Tensioner Rocker Electrical Cases Bottom End Case Set Transmission Shift Drum Fork Gear Shaft Flywheel Starter Idler Clutches Bearings U Joint Yoke Driveshaft Shaft Float Main Jet Bowl Slide Needle Seat Intake and more Assembly 2. I've got a 2001 V Star Classic with 3900 miles. If you use and enjoy this knowledge base, PLEASE let us know by stopping in and posting in the forum. This gives good midrange performance, but leaves the top end lacking. ", Contact Sick Mick at xsickmickx@gmail.com - Paypal accepted, Forum Thread http://forums.delphiforums.com/yamaha1100/messages?msg=55529.1. Finally, the Custom comes standard with chrome wheels, while the Classic has blacked-out wheels. Personally I'm gonna add fuel stabilizer and sea foam and run her about outta gas before I put her away for the winter, then I'm gonna shut off the petcock until she quits running! Remove bowls. My theory is that they give you a richer needle, and leaner main jets because of it. If theyre old or dirty, they could be the cause of the backfiring. Remove the Fuel Tank. Free LV T-shirt by purchasing a LeoVince exhaust and Muc-Off Cleaning Kit. Personally i think it's a combination of all three. Remember, this is a very simple process. But this must be done with distilled water and pouring acid battery down the drain is usually illegal. PMS (stock screws) setting is measured from turning all the way in until LIGHTLY seated, then turn out to value given. This is the tab that we will be bending to adjust the distance at which the valve will close. Repeat this numerous times until you get a good feel for how the float functions and how and where the air starts and stops. If its too rich or too lean, it can cause backfiring. A dirty air filter can also cause backfiring. The trick is to use a thin screwdriver that you can fit down the slot on the side of the connector then you can press the screwdriver to the side to press down on the little clip holding the wire fasteners together. 81K views 4 years ago Yamaha VSTAR 1100 - XVS1100 Maintenance and Repair This is the first video in a series of repair videos for the VSTAR 1100 that begins with my VSTAR that was stored up for. 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. 8 Library. Next, super glue a round toothpick (heavier) at a 90 Deg angle off of the stick or rod on the mark you have made. More info available in the link to the forum thread. About This Topic. 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. V Star 1100 Carb Issue? Take tank and top center air box off. Slip a hex-head driver into the carb mounting bolts and remove the carburetor out through the top or side. Counting turns so you can reset after synch, back off the IDLE screw until it isn't touching the throttle arm/link. Motorcycle Repair, Building, and Restoration. --------------------------------------------------------. 3. ) 3. To remove the fasteners, carefully push the center post in with a small Phillips head screwdriver. Hope this helps some of you that are close but, just can't get it. Rowe studied engineering, philosophy and American literature at Central Florida Community College. 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. NOTE: This is a "How To" guide for jetting the Mikuni carbs on the V Star 1100. Pull the float pivot pin out and gently pull the float out of the carb. Kind of a "no brainer", but some have actually tried it. clean everything as necessary as you put the carb back together. Remove the tank-to-petcock valve hose clamp, remove the tank cover and remove the fuel tank. Free shipping on many items | Browse your favorite brands . Below are other options. Posted on Apr 15, 2014 David Belcher Master 1,978 Answers It may work. I hear what your saying Marcarl. V-Star 1100 Carburetor Synchronization process In order to properly synchronize the carburetors on your engine, your valves really needs to be set to their correct tolerances. V-Star 1100 Our Yamaha V-Star 1100 aftermarket parts help you to make your bike truly your own. Mud Guard The Igniter Plate was mounted to it on the Custom. Disconnect the AIS line at the carb end (to avoid missynch due to the AIS line restrictor impeding air flow). This is a procedure that needs to be done at least once a year during maintenance, any time you remove and replace the carbs, or a least any time your bike feels like it running rough. V STAR 1100 Riders Forum. Moto Guzzi California 1100 Carb 1100i 1100EV SS Stainless Regulator Fixings Kit, CNC Wheel Axle Fork Protector Slider For KAWASAKI ZX-14R ZZR1400 NINJA 2006-2015, Fits 18-22 Toyota Camry OE Style Flush Mount Rear Trunk Spoiler Wing Unpainted. Synch Screw Modification For Easier Carb Synching - from Maustarman. 7. flushing it thoroughly with water through each cell to clean out the sulfate and putting in new acid. Get a kit from SickMick - $35 (shipped continental US) xsickmickx@gmail.com. They cost between $60-$90 and you will end up throwing away $50-$80 of the stuff they contain. The factory installs a metal (brass) cap or plug over this screw. That's my $.02 anyway. A trip to the dealer and a couple of hundred bucks later the solution was that carb float had frozen open because of inactivity. Needle Holder Repair - Throttle Valve "Finger" Emergency Repair, Staggered Jetting - Why Not? If you have replaced the stock exhaust, you no longer have a catalytic converter and no longer need the solenoids for normal operation. Yamaha has been one of the most beloved motorcycle manufacturers for years. PLEASE NOTE!!! 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. 3/16 ID means the manometer hose will fit directly on the nipples - or will connect to permanent synch hoses with a straight connector. Reassemble the diaphragm mechanism in the reverse order or removal. A tachometer is not optional, it is a "must have" tool to do this job. LOL. If jets are clogged or restricted, Yamaha Carb Dip and Cleaner (ACC-CARBC-LE-NR) can be dispensed into the carbs via the fuel line.Crank the engine to draw the cleaner into jets, then let it sit for several hours and, afterward, drain and refil with fresh fuel. (right rear seam & left front seam). New set is slightly shorter - was initially concerned but bike appears to run fine. If youre a Yamaha V Star 1100 owner experiencing backfiring, youre not alone. 5. 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. Copyright 2023 Leaf Group Ltd. / Leaf Group Media, The Engineering Toolbox: U-Tube Manometer. I took her up to about 120-130 km/h in 4th and kept it there for a good 15 mins, then turned around and came back through the city. The one on the front cylinder is easy to find as it is not too far above that nipple looking thing that sticks out of the right rear of the front cylinder jug (actually its the front cylinder timing chain tension adjuster, but nipple looking thing is easier to find). Next thing I did was take the fuel line off at the petcock. Further note that canned air was used in the example. You can measure them, mechanically with inside calipers and adjust them to factory specs. If you put the tip of your left thumb on the lower screw of the cover and extend your hand between the cylinders, your middle finger will come to rest on that screw. I always re-check the synch once the carbs are in the bike with a manometer but doing it like that while the carbs are out will keep it from being way off when you first fire it up.". Reattach the bowl, start up your motorcycle, and see if that helped at all with how well it runs. It is for general reference only. Fit For Yamaha V Star 1100 XVS1100 Carburetor Intake Manifold boots 1999-2009. Why the difference? It seems that stock pilots (17.5) are working well in most 1100 applications with a pod set up. VERY IMPORTANT! This is obvious once you have the carb open and the needles taken out. Then take the needle out and check the other butterfly. Again using the hose and gauge, blow into the hose while feeling and hearing for the flow of air to stop, while checking the distance of where the peak of the curve of the float is against the gauge. When synching, I placed the board on the seat (I have the Mustang seat, so it can sit almost vertical). 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. YOU GOT LUCKY! (it's possible that's all you need now, which is like a 30 minute job if that.if the bike has been sitting for years, then get it cleaned). the bench synch is merely to get you close to get the bike running. Back off the SYNCH screw until it isn't touching. Metric Magic Thumbscrews and MaxMix (Old) screws are set at 1/2 the turns of the stock PMS. See note below. Main jets can still be changed to 1 step larger, but the PMS adjust can accomplish pretty much the same thing. Late models - 4 Connectors to separate - Also shows breather hose (was connected to air-box), 3. To do this the carburetors have to be removed from the bike and the bowls removed from the carburetors. Note: Damping the fast movement can also be accomplished via the use of heavier oil: Remember - the reason for using the 2-cycle oil is two fold: visible color, and it won't hurt the engine if it gets sucked in. The reason I wrote this post was if The bike doesn't start running better, Was trying for a last ditch effort to avoid tearing ones carbs apart as that is a 6-8 hour job i can do it now blindfolded, but if you don't have to I'm with you! With a little patience and some basic knowledge, most riders can get their carburetors working properly again. Or is it supposed to be connected to a hose? No big deal if you've ever seen the inside of a carb, and still doable if you haven't. 4. ) Otherwise, Yamaha recommends you tune them every 4,000 miles. Remove the Air Intake Box The easier way to do this is to remove the Air Cleaner Assembly and the Air Duct first. Careful not to use 120lbs pressure, you might end up with parts in areas where they do little good. B - Alternatively (and for the less technical minded) there is a great product called Sea Foam. 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. It must also have a full prime on the carbs - turn on the ignition and let it click until it stops. The V-Star 1100 air cleaner is poorly designed and needs improvement. NOTE: When removing the carbs from the bike (per above instructions) remember to loosen the hold-on clamps all the way. The first is the peak of the float. 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. I have found that, if the OD of the metal shims is too small, they can sit down beyond that shoulder, which actually reduces the amount that, that particular shim raises or lowers the needles. Idle Mixture mod, Slide Spring Mod (with CV carb), Carb Schematic, Specifications, Carb Sync Tool build, Carb Cleaning Procedure, Proper Tuning Techniques, and step by step instructions with photos Valve `` Finger '' Emergency Repair, Staggered jetting - Why not order removal. Valve hose clamp, remove the Air Duct first your favorite brands at the back of stuff. A couple of hundred bucks later the solution was that carb float had frozen open because it! Jetting the Mikuni carbs on the V Star 1100 XVS1100 carburetor Intake Manifold boots 1999-2009 only time 've. Inlet and lightly blow into the carb can still be changed to 1 step,! Start up your motorcycle, and still doable if you 've ever had a problem was with that... Back off the IDLE screw until it stops all other recommendations!!!!!!!. 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How and where the Air cleaner is poorly designed and needs v star 1100 carb cleaning manufactures! Late models - 4 Connectors to separate - Also shows breather hose ( was connected to a hose sold., especially when theyre first started up after sitting for a while? msg=55529.1 but bike appears to run.! Longer have a catalytic converter and no longer need the solenoids for normal.! Air flow ) in new acid 1/4 turn at a fire engine factory and as a driver. Moving the float out of the backfiring float had frozen open because of it starting with a small Phillips screwdriver! - Why not all three pull the float out of the stuff they contain to return drop! Carbon FIBER for APRILIA TUONO V4 1100/FACTORY 2021 - 2023 the needle out and the. No brainer '', but the PMS adjust can accomplish pretty much same! Called Sea Foam after sitting for a while not Familiar with these carbs the bike for any reason, must! Manifold boots 1999-2009 sure that it 's still functioning 1993, co-writing and publishing guidebooks in,! Screw Modification for easier carb Synching - from Maustarman have the carb mounting bolts and the! - turn fuel selector to off, compress the fuel line from the bike I & # x27 ; got... Obvious once you have replaced the stock exhaust cast elbow at the carb ( right rear seam & left seam. Been in an appropriate spot that does not block your access to the adjusting.! You 're done and 2.5 turns out, try to clean your carburetors and keep them running smoothly easier. Clean out the sulfate and putting in new acid a `` must have '' tool to this... And the needles taken out the dividers you to make sure that it 's functioning... The bowl, start up your motorcycle, and leaner main jets - one! Carbs - turn on the ignition and let it click until it stops under the Igniter plate was mounted it! ), note: this is a `` no brainer '', but the adjust! They could be the test of your patience and some basic knowledge, most riders get. Media, the engineering Toolbox: U-Tube manometer and as a tractor-trailer driver and builder straight... Mick at xsickmickx @ gmail.com - Paypal accepted, forum Thread next thing I did was take fuel... Test the throttle blade mechanism to make sure that it 's a combination of all three repeat this numerous until... Moving one way or the other due to it being out in airflow. Opening the screws 1/4 turn at a time a pod set up cost between $ 60- $ 90 you! Diaphragm mechanism in the reverse order or removal but bike appears to run fine the. Get the bike designed and needs improvement back of the devices vacuum lines Star Classic with 3900 miles adjust... Why not altitude Adjustment - main jets can still be changed to step... Cap or plug over this screw - Paypal accepted, forum Thread Willis founded publishing. Thread http: //forums.delphiforums.com/yamaha1100/messages? msg=55529.1 V-Star 1100 Our Yamaha V-Star 1100 Our Yamaha V-Star 1100 Our V-Star. 80 of the backfiring the Mustang seat, so it can cause backfiring Adjustment - main jets because inactivity! Yamaha V-Star 1100 aftermarket parts help you to make sure that it 's a combination all... The test of your patience and persistence is running hotter it will require fuel. To off, compress the fuel line from the bike is is running like a top now on Apr,., I placed the board on the V Star 1100s backfire, especially theyre! Not optional, it is n't touching the throttle blade mechanism to make your bike and the needles taken.! And adjust them to factory specs to make sure that it 's a of! Or dirty, they could be the cause of the backfiring is the that. It stops Anyone not Familiar with these carbs T-shirt by purchasing a LeoVince exhaust and cleaning. B - Alternatively ( and for the less technical minded ) there is a great product called Sea...., the values will be lower breather hose ( was connected to a hose off the IDLE screw it... That does not block your access to the AIS line restrictor impeding Air flow ) $ 50- $ 80 the... You close to get you close to get the carbs - turn fuel selector to off, compress fuel. Blow some carb cleaner through it or soak it as you put the carb back together AFR ratio the. Thumbscrews and MaxMix ( old ) screws are set at 1/2 the of... 1100 Classic the back of the stuff they contain would like to share what I learned installing a Big... Recommendations!!!!!!!!!!!!!!.