You have just modified the distance that the float will close. Identify the jets; they're in the recess where the float needle went in. A carb system really isn't that complicated and you could probably do it yourself if you have the basic tools. BTW, this job can be done with a single dial type gauge but that is really a pain in the buttocks! Then did the measurement with my slide rule real easy. 2. Stock Needles - (looking from the fat end down to the tapered end) have a washer and spring above the C-clip (keep both) and then a plastic spacer below the clip and then a thin shim/washer below the plastic spacer. 473 Answers There is no shortcut for maintenance of the carbs. 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. NOTE: The 1100 uses 3/16" hose not 1/8" as mentioned in the link. 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. Once they are balanced (the fluid or vacuum is not moving one way or the other) you're done. 6. This is the base point that you will use to measure the distance to the peak of the float. Disassemble the carburetor by removing the float bowl, jets, and other parts. Shop by category. Once you've cleaned the carb out, dry and clean the area thoroughly to remove any of the cleaner. Jul 12, 2011 Puzzled here. 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. I know what your saying though about rust/condensation and corrosion. 8mm ID X 11.5mm OD, Forum thread Throttle Shaft Seal Replacement, "The wKB" V-Star 1100 Wiki Knowledge Base, If the bike has been sitting, drain the fuel from the float bowls before starting. Proper tuning the PMS will take care of it. Fast forward 1 year later, I've got gas dripping out of the carb onto the cylinders but the bike does start. 06-09 years only. Ok, You will need to remove the Seats and Fuel Tank in this order: 1. ) And the reading at idle should approximate: 34.7 37.3 kPa (260 280mmHg), 5.) Get the best deals on Carburetors & Parts for 2008 Yamaha V Star 1100 when you shop the largest online selection at eBay.com. All carburetors need maintenance from time to time. Personally I put Sta-bil in everything that is going to sit for more than a couple weeks. When both gauges read the same, LIGHTLY rev the engine two or three times and measure the levels again. 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. Which began shortly after the release of the V Star 1100 in 1999. 17.5. This can be frustrating, but there are ways to fix the issue. 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. Retail Pod kits come with the jets you will need, as well as instructions on which jets to use and how to set PMS and Needles. This is the 3 wire clip at the rear of the carbs near where the seat would have been. The PMS screws can be turned out as far as 4.5 turns before going up to the next jet size. Why did Ford use two-piece spark plugs? Stock Needles - How They go Together: (Thanks to DSWANZ). There is no need to remove it from the bike, but it must be loose to access the Speedometer lead connector. It is also good practice to check the synch at least once a year. Further note that canned air was used in the example. If you've done the "POD" modifications or gone to aftermarket pipes, you know those solenoids in the float bowls aren't doing much of anything except hanging there with an ugly wire coming out. 11. ), Note: Not all carb manufactures call parts the same name. . YOU GOT LUCKY! This is more then sufficient time to sync the two carbs, but the engine must be HOT to get accurate readings. Stock Jet Settings for 06-09 Shut Off Solenoid Bikes - STOCK INTAKE/EXHAUST ONLY !!!-. -nick, When you need jets for the 1100's stock carbs, you are looking for: Mikuni CV Carb Jets - Small Round Jets, Mikuni Main Jets: KN102221-xxxx where xxxx is the jet size, i.e. TUONO V4 1100/FACTORY. Generally they run from $7-$10 each. MotorcycleForums.net is the leading motorcycle forum for news, specs, reviews and discussions, including road and sport, classic and dirt bikes. 10. ) 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. the bench synch is merely to get you close to get the bike running. Disassemble the carburetor by removing the float bowl, jets, and other parts. Drain carbs, open 4 drain screws then close. Part #: 15248C; Parts Unlimited Part #: 1811-4253; . The carburetor vacuum ports are on the ducts which leads from each carburetor into the cylinder head. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. A trip to the dealer and a couple of hundred bucks later the solution was that carb float had frozen open because of inactivity. The popping on deceleration is a fuel volume issue that's caused by the amount of vacuum created by the exhaust being used. let sit 30 min. Barons Big Air Kit - Input from Squirrel aka Rob Lewis. The information below is for reference only. The fuel line is a over flow from the carbs for just this cause. 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. It's best to make small adjustments and let things balance out for several seconds before making additional changes. It is for general reference only. 5.0 / 5.0. 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. 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. 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. Altitude Adjustment - Main Jets - drop one size for every 2000-3000 feet rise in elevation. Can anyone add or correct any assumptions I have just made? It should be your high speed jet? So if you set it at 12mm..you should double check the setting. Remove the tank-to-petcock valve hose clamp, remove the tank cover and remove the fuel tank. This is not optional.it is mandatory to insure proper tuning. For me, those 2 tips were the most important things to remember to make it a very easy job. Found my error with fuel starvation - the seat for the needle jet has a flat side for proper orientation - I didn't realize this and installed incorrectly yesterday. 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! 6. The main reason we see people adjusting the float level is because they bought a Max Air intake kit. Don't over think it -- you set them in sync at idle so they work together appropriately when you take off, when you first twist the throttle you want both carbs to open at the appropriate time time, as you increase in rpm they will not stay in sync because both intake valves are not opening at the same time obviously and the more rpm you have the more the vacuum changes and the valves open and close fastersame in a car with multiple carbs, when you mash the gas pedal you want the carbs to open at the same time not one and then the other. Everybody puts way more emphasis on the carb sync than they need too - it is not an exact thing and never will be at any rpm, you just want it as close as possiblethey even give you an acceptable range of difference between the two at idle.. don't over think it. Consensus on POD is to use same size mains front/rear, unless specifically specified by the pod kit manufacturer. 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 a time due to reasons beyond my control leading to gas rot. However, based on the average lifespan of a motorcycle, it is reasonable to expect that a Yamaha V Star will last for at least 15,000 miles before requiring any major repairs or maintenance. The bottom of the float is shaped with a curve and we want to find the peak or the highest part of this curve. While many modern V-twin motorcycles have gone to fuel injection, Yamaha's V-Star 1100 is carbureted. 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. Needle Holder Repair - Throttle Valve "Finger" Emergency Repair, Staggered Jetting - Why Not? A half can in a full tank of gas is a normal amount. Anytime you modify your engine, you can expect the carburetor may have to be tuned. Mains - Stock bikes come with staggered main.s. V-Star 1100 Carburetor Synchronization process. The bike is is running like a top now. Float Tool Options: Some folks are using a metal metric pocket ruler with a T-slide for their measurement tool - picture below. Needles with notches and clips, UP = Leaner, Down = Richer - as you are allowing the needle to move down less - (both refer to clip position relative to the top or blunt end of the needle), With stock exhaust or Cobra Slip-On Mufflers, One .020 shim added to raise each needle, 122.5 Main Jet in the front cylinders carb, 120 Main Jet in the rear cylinders carb, Pilot Mixture Screw (PMS) 2 turns out from lightly bottomed, With Vance & Hines, Samson, or open Drag pipes, 125 Main Jet in the front cylinders carb, 122.5 Main Jet in the rear cylinders carb. There was still one cyclinder not firing, so I opened the drain screw on it while the bike was running and sucking cleaner still and that forced cleaner into that carb as well. The only time I've ever had a problem was with lawnmower that sat a month without. Maustarman put together this video of a modification he did to make it a painless operation. The link is a universal DIY. it is more restrictive than the front elbow built into the pipes. With a stock of more than 250,000 used motorcycle parts, Baboon Motorcycle Parts is I did this for about 5 mins of running at high idle. Referencia: 15248C; . . Clean as necessary. 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. Cams - The above settings do not currently address engines with performance cams. Avoid having this issue by reading into properly STORING YOUR BIKE. 1. . Some riders have reported that they were able to re-solder the wires back together as long as there was something left to solder to. Hang the device in an appropriate spot that does not block your access to the adjusting screw. 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. 4. The jetting recommendations below are only a good starting point. 3/16" ID clear tubing (one end is darker due to staining from oil), 5. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. If you take fuel line off at center rear of carbs and spray full, this will effectively place cleaner in all your carbs. Spray carb cleaner into hole at the "T" sections of your carbs will be your overflows. In order to properly synchronize the carburetors on your engine, your valves really needs to be set to their correct tolerances. If there is air in it you can get condensation that will cause rust. Is the idle issue caused by running without the resonator and intake? Late models - 4 Connectors to separate - Also shows breather hose (was connected to air-box), 3. V-Star 1100 Pilot Screw Cover Cap Removal Before Carburetor Cleaning The pilot screw is used to adjust the air for the idle fuel mixture on the carburetor. Yamahah VStar 1100--sudden problems appear. 9 Specifications. For all of the needles that I have reground or made, I always put the plastic spacer (plastic shim) on last as it doesn't get past the shoulder. 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. -----------------------------------------------------------------------------------------------------------------------------------------------------------------------, SS Custom Cycle/Performance Tuning XVS-1100, 429 Cam Kits: With Stock needles (Not For Slip-on Exhausts), 3.25 to 3.75 turns out on stock PMS with stock float level & 20 pilots (Start at 3.5), Above based on the use of a full after-market exhaust system and SSCC's Chubby air kit. 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. At this point it's just reassembling the carb in the reverse order of disassembly, tightening all fasteners just past snug. It seems that stock pilots (17.5) are working well in most 1100 applications with a pod set up. Swapping them around may result in an inconsistent air-fuel ratio. There are numbers in parentheses in the chart below (1). It sat at a friends for over 2 months with reserve fuel only and the gas went skunky. will cause less "bounce" when measuring/synching - larger ID means more fluid / weight to move therefore less "bounce". 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. We rarely change the needles, as the stock ones perform very well and the tuning charts presented on these pages reflect using stock needles. Of particular importance in multi-carb motors like the V-Star is synchronizing the carburetors. If youve tried all of these things and the backfiring continues, its time to take your V Star 1100 to a mechanic to have it checked out. 2. 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