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Randy's Cycle Service Explains Carburetors, Choke & Cold Starting - vintage motorcycles @ rcycle.com

Randy's Cycle Service Explains Carburetors, Choke & Cold Starting - vintage motorcycles. Randy's Cycle Service & Restoration in central Virginia USA. We service & restore all makes & models. We do not source or stock parts or sell vehicles. Technical advice starting at $25. Randy's Cycle Service & Restoration, www.rcycle.com


 


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CV Carburetor
How a cv carburetor works. Sound of a YAMAHA XTZ750 Super Tenere.





How Motorcycle Carburetors work and how to tune and clean them
Here's a link to the kind of carb cleaner I like best (it IS the best) http://www.amazon.com/gp/product/B002ERT666/ref=as_li_qf_sp_asin_il_tl?ie=U TF8&camp=1789&creative=9325&creativeASIN=B002ERT666&linkCode=as2&tag=httpww wyou00f-20 How Motorcycle Carburetors work and how to tune and clean them Check out my other channel here http://www.youtube.com/watch?v=1KKvwMaIotA





Two-Stroke Scooter / ATV Carburetor Settings And Adjustments 2of4 : Idle Speed & Mixture
Part 2 of a 4 part video detailing all of the basic settings and adjustments of the carburetors found on Minarelli / Jog / 1E40QMB powered 50-90cc scooters and youth ATVs. Part 2 shows how to adjust the idle speed and mixture settings. Please like the video if you found it to be helpful.





Bicycle Engine Kit Carburettor Needle Setting Tips
How to install and check the cable, spring, barrell, needle and clip that dwell on the inside of the carburettor of your bicycle engine kit.





How to clean motorcycle carburetors
Longtime viewers will see this as a refresher, but it does have some new tips not included in my previous carb videos





How to test motorcycle CDI box, ignition coil
Mostly concerning CDI boxes and ignition coils... for more technical information feel free to message me, I'll send you some good info





How to diagnose carburetor vacuum leaks on your motorcycle
This is a simple video demonstrating the best method to detect vacuum leaks around your carb boots. Vacuum leaks are a fairly common problem in older bikes, and luckily they can usually be remedied quickly and easily, the first step however is diagnosis. If your bike is running rough, won't rev up or has an irregular idle, before you take off the carbs and open them up, check for vacuum leaks. A vacuum leak occurs when too much air is introduced into the combustion chamber via a failure in one or more of the carburetor boots or other rubber mating surface. When too much air is sucked in, then the bike cannot combust the gasoline efficiently; there must be an optimal ratio. Therefore it is up to you to detect these leaks, and either plug them up or replace the carb boots. In this particular bike, the engine was running VERY lean. Not only did we have vacuum leaks, but the baffles were taken out of the engine, and the previous owner had removed the air filter and neglected to install a new one. This is not only dangerous by allowing foreign material to enter the engine, but it also makes the engine run much hotter, as lean explosions create more heat than regular ones (think about blowing on a fire in your fire place: more air, hotter fire). This can be detrimental to a variety of parts in the engine, and it is a good thing we didn't ride this bike around too much before finding the problem. If anyone has any questions as to why this is important or how to find/repair these leaks, leave a comment and I will respond. Thank you





Yamaha 2 stroke basics (Builder) - Post By BoatTest.Com
http://www.boattest.com/vlibrary/vlist.aspx?s=Yamaha&BtnSearch=Video+Search &btArticle=Article#Others





1998 Kawasaki kx100 Keihin PE-26 carb rebuild
Carburetor rebuild of a 98 KX100, KX80 and other bikes with a Keihin PE 26 carb





How to adjust the jets on motorcycle carburetors
This is a brief introduction to the fairly touchy process of re-jetting your carbs. The techniques discussed here are fairly universal to most carburated motorcycles, but not all, so your first step in performing carb tuning should be to consult your repair manual and online forums. Hopefully this video can demystify a lot of the process for you, so that you have the courage and interest to do this yourself. Let me know if you have any questions.





Mikuni Carb series #4 How a Mikuni carb works.
Ever wonder how a carb works - I'll explain it.





How a carburetor works, schemes and explanations
This video explains, not in too much detail, how a 28mm Walbro diaphragm carburetor works (using mainly schemes to point out what happens inside). It explains what occurs at the venturi, what the butterfly valve is for, how the needle doses the amount of fuel, and how does the diaphragm slide adjust itself.





Mikuni carb series #2 Disassembly and cleaning
A detailed tear down and cleaning of the mikuni carb.





Motorcycle Repair: How to Clean a Motorcycle Carburetor
Visit http://www.thesmallengineshop.net **Always follow the instructions in your repair manual when doing repair or maintenance work on a motorcycle. Manuals can be found at the dealer and online.** Almost all motorcycle carburetors are slide type carburetors. Slide carburetors can be further broken down to either mechanical or vacuum operated. The vacuum operated carburetors are called CV or constant velocity carburetors. The slides in a mechanical carburetor are operated by the throttle cable and the slides in a CV carburetor are operated by engine vacuum. Both type carburetors are very similar and are cleaned the same way. Although care must be taken with the rubber slide diagram in a CV carburetor. If you choose to clean a carburetor with carburetor cleaner from a can, or chemical cleaner in a dunk tank or gallon container, you must remove all rubber and plastic pieces on the carburetor, or you risk ruining the parts. A parts diagram for your carburetor will help you identify all the parts that make up the carburetor, so you can remove the plastic and rubber components before exposing the carburetor to chemical cleaner. Another method of cleaning a carburetor that doesn't involve toxic cleaners and is safe to use on all parts of the carburetor is a ultra sonic cleaner. Ultra sonic cleaners are usually marketed as jewelry cleaners, but they also work great for cleaning carburetors. Carburetors have passage ways in the body of the carburetor. Some passage ways are used as vents and some passages are used for the fuel circuits in the carburetor. A motorcycle carburetor basically has 3 circuits if you exclude the choke, and performance items like accelerator pumps. Every motorcycle carburetor has a idle circuit, intermediate circuit, and a high speed circuit. The idle circuit is responsible for delivering fuel from closed throttle to about 1/4 turn of the throttle. The intermediate circuit function from about 1/4 to 3/4 throttle opening, and the high speed circuit is responsible for delivering fuel from 3/4 to full throttle. The circuits are not limited to operating in this range, but they overlap and this helps the engine to transition from one circuit to another. Identifying these circuits in the carburetor can be helpful in cleaning the carburetor, but it isn't necessary. The main components of the idle circuit is the pilot jet and idle mixture screw. The main parts of the intermediate circuit is the needle jet and jet needle. The main parts of the high speed circuit is the main jet. After you have all the components in a carburetor disassembled and cleaned, its important to use compressed air to blow out all the passages of the carburetor. I can't stress enough how effective compressed air is in cleaning a carburetor. Sometimes passages in the carburetor don't get clean from whatever cleaning method you use, and compressed air can be used to blow out the obstruction. However, be careful not to blow out parts that should be in the carburetor. A parts diagram will help to avoid this problem. After all parts of the carburetor are cleaned and all passage ways and jets in the carburetor blown with compressed air, the carburetor can be reassembled and adjusted if necessary. Thanks for watching!





Go-Ped Top Speed Record! Derek Short Top Speed Run! 64MPH!
Dual Engine 460 Ped Go-Pro VIEW! http://www.youtube.com/watch?v=XvDbEIPQvsQ Dipping Hardcore Dual 460 Ped! http://www.youtube.com/watch?v=Q7u0xtr_3Ho Dual 460 Ped almost CRASH!!!! http://www.youtube.com/watch?v=s-ub1SGr48k&feature=relmfu




Which car is faster? Which Car is Faster?





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1985 Honda Sabre V65: 11.906 @ 112.610
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1987 Subaru RX Turbo Leone (Aust): 12.520 @ 105.000
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2003 Cadillac CTS : 15.183 @ 90.690
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1996 GMC Jimmy LS: 15.769 @ 86.700
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1995 GMC Jimmy 2dr, AWD: 16.225 @ 82.260
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