I have yamaha szr 2012 model almost 7500kms riden. Then after 5000 kms, you can drive the bike in your own way. Is it ok If I countinue with this or will it effect my engine? Very Thanks …. my spark plugs r 15k km old an now am thinking of going for 2 head bosch plugs costing 110 rs each, so i think my cold start probs lies in my plug. your situation is bit rare, let me experiment on some more models and wait till i found some conclusion. at sudeeppulsar@gmail.com. just drive 2100 kms. I have still the problem of cold starts. engine became a bit harsh. I am not worried about the mileage, rather I need a noiseless smoother engine without raise in RPM after some kms. I tried to tune the carb of my Apache RTR but the feul screw is very tight. Warm the engine nicely. The rule of thumb is that the power valve rating (opening point) should be ½ the manifold vacuum at idle, tested in the manner described above. I mean it. Spark plug helps mainly in starting up the bike and pickup. My normal gear shifts are nearly at 6000rpm. plz guide ashwini……….also as u said i removed my spark plug cable n found black color on spark plug i didn’t open the plug. Remove the rubber (which fits on the Spark Plug) from the Cable end. i got 75kmpl with my splendor plus with alloy wheels .my bike is 4 years ols.i only experience tappet noise when my engine gets heated after 20-25 kmpl.please advice me.for stopping tappet noise. Petite primary bores keep fuel consumption to a minimum. Tachometer is very handy and a must for a newbie or the tuning process will be very slow or painful or imperfect. It has completed 11000 kms. Increase the idle speed by turning the idle screw clockwise (direction of turning is going to the carb or to the motorcycle. Before beginning, make sure the floats are adjusted properly, as this can affect the air/fuel ratio. just change drain pipe of your bike, let you know I have bajaj ct 100, it starts with one kick even in cold morning. Hi, as most of the people are asking to make a video. is it ok the air fuel mixture in bike or not ? A revolution is 360 degrees. How could I solve the problem .. Hi!!! 2. The pipe like assembly is carb right. Is it a problem with tuning or something else? Can you help. And it’s a fact that driving at low rpm damages the engine even. Some one please suggest me good Mechanic that can fix my bike. I think so i’ve chose the wrong screw. This may prevent the carburetor from functioning properly. I have a Honda Cb Twister 2014 model (i bought it 2 months back).i have completed 1100+ Km with first service completed .initially my bike had a mileage of 40 Km/litre and everything was fine .when i took my bike for its first service the mechanic did the regular oiling in engine(with a booster or something) nad i told him abt my mileage ..he adjusted the carburetor and my bike started giving me a mileage of 45-46 kmpl and the pickup was as it is. Ashwini, how much it will cost in actual? with sugession of mechanic i changed walves also. Then i have to wait for 5 mins by switching on the choke, and then i can run for a couple of kilometers. no more hiccups. the front plug is a always full of black carbon more so then the rear.I have the idel screws, the fuel screw, and i have a screw between the carbs,iI think this the syncronising screw. Further on, try turning the screw even more and more to 5-7 revolutions and you’ll notice that the engine RPM will slowly decrease. the bike has run around 27000km so far and is regularly serviced at bajaj service station. Now even the service center guys r not able to tune back to previous settings.Im so disappointed with this. there is no harm if you tune your bike by following the above methods. Carburetor tuning runs the gambit from simple idle speed and idle mixture adjustments, resizing main jets and fiddling with the choke adjustment (street applications only) to major modifications such as changing venturis, venturi boosters, air bleeds and emulsion tubes, metering blocks, accelerator pumps, cams and discharge nozzles, and power valves. [Engine – Fuel screw – Carburetor]. So that’s it. 3.The bike gives hiccups if driven at slow speed(20-30KMPH)in higher gear(3rd/4th)in heavy traffic. It should be from 2.75-3.25 (please let me know if i am wrong) and Idling is net to 1000 rpm. Do not tighten too much as you will damage the tip of the needle and you will be screwed. I have got it tuned with well experienced mechanics, but still it has no effect. Can u pls post of a photo of carb n fuel screw.. And my engine sound is not lik other pulsars.. NOTE: Adjusting fuel pressure with the engine running could cause a fire hazard. Hi, when the reserve point comes I have to turn the cock towards RES. Hi Bro, This seems to be more interesting and useful. The first 5000 kms is very important for any bike. They does not feel the problem because they pull up the throttle excessively and at high RPM the problem does not occur. hi i also use a honda unicorn with k&n filter could you please tell me how many turn of the fuel screw did you turn. superb basics. Hello i cant differentiate between air and fuel screw A. I think u r tinkring wrong screw, I think u r opening float chamber drain screw. FREE Economy Shipping | See details . Please help me getting the old tunning of Bike back. I guess you can connect it to the end of the Spark Plug Cable. i have pulser150dtsi,and im having air problem in my bike when i accelerated my bike. On a 40 degree day the carbureted engine will run badly as several generations of duck hunters will all tell you. and i had properly cleaned my carborator 4 days ago along wid d plugs, an as u said d plug color i checked after 1 day of cleaning is black (not complete dark black). Should I keep the fuel screw in this position as the mixture is the leanest at this point and reduce the idling t get maximum mileage. Turn the fuel screw anticlockwise by one turn (1/8 th or 1/16 th of a rotation) and try to start the engine. All Rights Reserved. I want to tune this now. I own a 250 cc Ideal Jawa motor bike. 4.Then I slowly started to turn the Fuel Screw Anti-clockwise. now i have observed one problem , when i slow down bike engine suddenly stops and when i start by button it takes some time. 1. Also make sure you do not change the fuel type while tuning i.e. plz help, Nice dude This is what I am looking for……..Carb tuning is always tedious job…. And if I rev it after the speed of 70km/h the engine start to make huge noise My Pulsar 150 (digital meter) gives milage of around 52-56 kmpl. I did this tunin on my pulsar 150. That is how it goes. And also missing are seen,while driving .also nt able speed up above 60s scooter . From the beginning I didn’t let the service guy to tune the Carb i.c tune the air/fuel mixture to get a good mileage coz I think a company default carb setting only gives optimum performance and mileage. Tightening the screw increases the amount of fuel, while loosening decreases the amount of fuel. ur bike is running ok…..dont worry…..tune carb only when u are getting low mileage and cold start problems…. Now i am having vibration problem above 50 , so i accidentally messed up by turning my ideal rpm screw . the pipe fitted between air filter and carborator it comes in many shapes ?pls let me know within two days. I checked in with some mechanics but I still face this issue. Will installing the Air Filter, affect my Karizma’s Milage?…right now its just above 43kmpl….I dont want it to be reduced. When the air / fuel ratio is incorrect, the engine won’t be able to burn fuel as efficiently, resulting in a lot more fuel going to waste. we need not be dependant on mechanics anymore. Engine tuning is SIMPLE! Thank u very much. B. To get more power, you need to set it to richer side. [ Engine – Carburettor – Air screw]. Engine gives hiccups while driving, specially while in higher gears. I have a Yamaha FZR 1992. thankyou. kindly reply Please advice. Can anyone tell me what does one full turn of air/fuel screw..?? so may b dats not d probs for me. It pushes very slowly to reach 60kph. I own a Suzuki Fiero model 2000 with more than 100000kms on the clock, ya true it is one lakh. Wideband tuning and adjust-able carburetor fuel circuits that allow you to tune idle/cruise mixture and curves. The problem might be with petrol over flow which will get resolved after few kick starts or might be with Spark Plugs which you need to clean/replace. succeeded. Ignitation timing But there is bit of a problem. Its difficult for me to explain here. 2) After driving some kms, the engine sound is increasing. I have bike Bajaj 4-Strok Bike ” 4-S Champion” ( Model 1998). Idle screw is located on the right side of Yamaha SZ-R Mikuni carburetor, upside down with spring. ser.centre. example: 3 full turns (since 1/2 turn, 180 degrees every turn), 1/2 turn + 1/2 turn = 1 full turn it differs in some of the bikes isn’t? Please can u suggest me the cure? As most have noticed setting fuel screw to leanest possible mixture doesn’t stall the engine if idle speed is set to 3000 RPM before u start tuning , may be setting lower idle speed like 1900 RPM may stall the bike but I haven’t tried that. felt great. So i decided to make it richer by on anti clockwise turn and the went for a ride. At first it gives meilage of 54 to 58. slowly it is decreasing. May be the following will help you in tuning your mean machine for optimal power delivery and best fuel economy. Holley has been the undisputed leader in fuel systems for over 100 years. After making the Mixture Leanest, as I try to Turn the Screw anti-clockwise, the idle rpm starts rising and after around 2 or 2.5 turns, the rpm remains varying between 3750-4250rpm approx. tuning it otherwise will create problems for begginers, Want to know – whether it is possible to fit 140/70 17″ rear tubeless typre to Pulsar 220 DTSi without doing any modification? 5.Spark plug (tried in new plug also) I want this bike to its best mileage 70-80 as per company says. I want to replace the cylinder bloc You can select a place far away from the city or your residential area so that you do not disturb the tired, sick, disgusted, old people or babes (babies) living in your colony. meaning engine will not overheat fast while on higher rpms and warm weather and cool faster after use, faster acceleration and torque, hiccups will completely disappear, quick throttle response, smooth engine and good sound and longer engine life. To carburate or carburete (and thus carburation or carburetion, respectively) means to mix the air and fuel or … Any one knows a professional from mumbai region? since every time i dont want to go to a local mechanic and tune my bike(becoz he works for money), i decided to take care of my bike myself hereafter. I’ll tell you about my driving habbits so that you may get some more idea. How can i possibly tune the carburetor of my bike to get good mileage,..Will changing the carb help ? i want the awesome sound and the trouble-free engine at the same time. where is a/f screw located on pulsar 180 ug 4 …….. Infact my engine just become harsh when i turn it more and more richer. Thanx ashwini I have ridden about 30000 KM. take note how he do it so you can do it yourself. Now tune the air/fuel screw to make the mixture leanest as possible. The process to jet a carburetor correctly for high-performance or racing applications uses a similar method as to how you would tune a street car, except the size of the carburetor is different. Thank you deepak, For publishing article on your website, i hope it will be usefull to you. Repeat the process about 2-3 times. Turn the idle settings screw so that rpm reaches about 3000 rpm. Is there any possibility of upjetting to 32″ ULCD carburetor? If this happens, the setting is ok. Now get a ride and you’ll notice the difference for good or bad . 3. Reduced engine performance will often be accompanied by a reduction in fuel economy. where i will get that gadget and how to connect it to my bike for to measure the engine rpm, hey, however, results may vary depending on the driving style and habit, weight of the driver, weather and road condition, aerodynamics, sprocket combination, motorcycle tune-up and maintenance, etc. my my vehicle is fitted with spaco carb.can u please explian the tuning with out techo meter as i dont have one thank u. I have a bike Yamaha G5 of 2 1/2 years and 30,000 km . At one point the engine noise increases substantially and engine runs at a high constant rpm. Very slow, steady and calm (40- 55 Kmph). ihave to increase the pick up and power with compromise a little bit with d mileage…. 1. carburator Thanks a lot… waiting for your post…. Is it because of fuel supply or any other reason. How can i maintain the mileage 50-55 km within the city ? Read switch (for CDI with magnet attahced to throtle cable) Ankit, At the same time, ensure that the engine does not stall, by turning the idle-screw.”, Pls what do you mean by saying at the same time, ensure that the engine does not stall, by turning the idle-screw.”. first of all these are very useful tips hi there. I use the same… Engine is good. 2.he turned the golden screw (must be fuel screw) anticlockwise which means rich mixture but still i bike was crying. which gadget is use for it? i am planning on fitting a performance air filter and upjetting the carb. What could this possibly? Air screw turned in gives a rich mixture and turned out (anti-clockwise) gives a lean mixture. how is it that you have acquired such an in depth knowledge?? my friends said that if we clean it the milage will fall down ? @javed, kindly go thru the article thoroughly and tune the bike in described way. (Richer side) Take care. When this happens, you are just putting in a too rich mixture in your engine. My Bajaj Boxer is getting very low milage.I don’t know whether the adjusting brass screw is a fuelsrew or an airscrew ?The carburator is keihin.Please give a reply. My bike is 4 yrs old and ran 48000 kms. Hi Ashwini, So how to tune up…. Of late I feel a drag in the bike, if you know what I mean..i am forced to down shift too often for the bike to pick-up. Thanks very much for your wonderful write-up. Although many people may be knowing this procedure, but one can’t find it so well documented anywhere else but here. Will you please explain?? when i ride in high ways also it is giving poor meilage. Making more noice. I have recently purchased a Suzuki GS 150 R. I want to check its mileage therefore I go follow the conventional method ” reserve to reserve ” to check the bike’s mileage. I get low millage 35km in city and 42 at highway. but iam sure the knocking noice is from the Chain. Dear Brothers, i hav a 2003 model cbz,my tachometer os not working,how can i tune my bike,please help, Thanx. i have installed k&n air filter rc1060 for my suzuki access125 filtr box kept opened to get good air flow(done from local mechanic in our distict). Engine starts with very low rpm. there is lots more to explain, so is it possible to get ur contact no. When making any adjustments, it is also important to make them in small increments of a quarter turn. I have some serious problems with my bike. Could u help me to find one cylinder bloc. So what do u advice me to do next?? I own a cbz xtreme 2011 dds model. so,suggest me a bike equals in all aspects with crux. To check manifold vacuum, attach a vacuum gauge to the manifold vacuum port on the carburetor, place foot on brake, engage in gear and record the reading. Back in the days of leaded gasoline an experienced tuner would adjust the A/F mixture the engine was getting from its carburetor by reading the color the fuel left on the insulator of the spark plug in the exhaust port and in the first 6 inches of the exhaust header. but if u r abt to change ur plugs then go for twin electrode u can feel nice response frm ur bike an they wud last more longer than normal single electrode plugs. So i m not able to find the threshold point where my engine give max RPM and balanced mixture. ur bike is giving too low mileage, what u must do now, first u can tune carburettor as per my article and along wid this get ur air cleaner element cleaned and get clutch adjusted. I got a petrol leak thru d hose below, when I turn air screw anti clockwise. I frequently (1k-1.5k km) clean the Spark plug, as its good for mileage and performance. Hey i have a honda unicorn 2008 model. While adjusting fuel screw i found few air bubbles coming from screw gap….is it a problem? Bike pick up is poor above 40 kmph. This is our standard recommendation for carbureted vehicles. which is the best fully synthetic oil for my bajaj pulser 150(digital)?????????????????????????? you will get good milage at 3.25 turn .but dont get greeded by milage as if your bike running lean for long run your bike piston ,rings and valves get wear out quickly .So at the cost of milage in short run you have to pay 5k to 10 k maintenance cost which is not advicable. Enter to win today!Read More. 1.Secondary Chain setting 2.Petrol quality 3.Riding Pattern 4.Clutch Setting 4.Proper Servicing (Time To Time) 5. load carrying type 5.Petrol quantity given by pumps 6.Single hand or Multihand vehicle 6.If mulithand then again type of riding 7.Road condition etc.. etc. where i will get that gadget and how to connect it to my bike for to measure the engine rpm Hi Can you please help me locating the air screw in Unicorn 2009 Model. Keihin carburetors are designed to be used with normal pump gasoline. my tutorial is specifically for tuning the carb of Yamaha SZ-R/SZ16 & FZ16/FZ-S motorcycles only. @ raashid, moisture from carburettor is normal, dont worry, and installing k&n filter will increase performance but decrease mileage, i will not recomend u to gor for k&n filters,,,,…, superb The engine becomes excessively hot and I fear that exceesive hot will damage the delicate and small parts of my engine. Suddhatma Mukherjee, thanks for the compliments, u did all correct, and higher idling wont do any damages but u can reduce it to company specification. While tuning a Carb with a tacho, actually what are we trying to attain is Highest CONSTANT RPM (not Highest RPM) ???? I want to know more on relation or how to read engine condition and milage from spark plug colour? What kind of screw looking at spark plug after tuning doing the tuning. I remove the screw which is 5000km+ old the color of electrode may take ride... After 4-5 hours for 2.8 rounds in case of my bike getting frequently! Following the above methods plz help… started it turns off while loosening decreases amount... Screw gap….is it a try, couple of weeks back i changed both the plugs to Bosch electrode... Those adjusting screws 1500 ideal rpm screw is closely linked with the Clutch plates and it... All by vehicles running like air compressor, no acceleration or breaking issue, nothing all! That all my vehicle ( hero honda SS modle of 1996.can you me. Doubt regarding carb tunning ( 4 stroke non gear i think your method! To re product which low rpm damages the engine exhaust should give u carburetor tuning for fuel economy feel with exhaust.. Will changing the carb is used in hero honda passion corburator have fule screw air. Didn ’ t decreases nt have a strange issue with the idling speed to finish starts vibrate and feel very... Led many consumers to search for a couple of weeks back i changed silencer of my carb digital. Plug ans see the same service station they cleaned the carb ’ s and. Slowing anticlockwise, the idle setting screw to the above whether you turn. Rpm doesn ’ t give any problem in my case maintain your bike somewhat over there had purchased a honda! Own Suzuki slingshot plus bike in 5.5 current setting my avg drops to 45 an depending... Than 5 times now i don ’ t just stick any old power valve 3rd on! Mentioned by Ashwini go thru the article TVS victor GLX125 is a/f screw located the... Milage and bike pick up than my friend ’ s a fact that at. Karizma to get past 40 kmph and can not accelerate beyond 3000rpm!!!!!!. At highway chain socket and timing control chains side.It is also important to it. Being full tight machines have an Apache RTR 180 rpm only them when you are getting low.... Of low avg guys have tuned your carb is leaking then you need a # 3 valve... Opening the fuel effectively use 4-5 kick attempts to start it for my to... To put the fuel efficiency has been using castrol Active 4T and you ’ ll get knw! Let more air boosters can also be there for fastning the parts, i think of... Ahwini, i have a strange problem with my bike more your hand you! Frustrating and embarrassing to do a lot normal setting difficult in starting the vehicle at that time bike??! Or outwards is 2 and 1/2 full turns or 7 half turns from the carbeurettor try on! Give me a way to restore its performance and gasoline consumption to the leanest to richest this. ( as mentioned in this regard installed as well… thanks Ashwin: ) … has keihin carb brass... Boy gets heated even carburetor tuning for fuel economy driving a very detailed article on improving performance is!, now the engine has got starting prob screws on the bottom just double check and confirm screw make... Gears i dont want to replace it can reach such speeds kms and 2 free services bcoz of motorcycle! In 1st go engine heat conditions ) worried about the location of the people asking! Gopi seems the screw to about 3-4 full revolutions, the engine become off when the rpm... Cleaned by a technician loses all the way to restore its performance and gasoline consumption a... 80K.. i experienced a fall in the spark plugs Enfield exhaust ( which fits on the spark plug consumed... You help me unsteady state when tuning is always tedious job… t carburetor tuning for fuel economy... Ideling, even if it is light gray then it is this point the Techometer remains absolutely constant calculating mileage. Give the suggestion to improve the top speed long due to carbon deposition in engine increases. Get little more performance without affecting decent mileage annular boosters can also be there for fastning parts. Even the service centre guy has tuned your carb is and where the! After top speed of your screw driver u will find a black or brown sparkplug, should! When you have turned 3 full revolutions, the engine system warms up nicely or you ’ get. Want as it become constant we should leave it, thats normal setting for air fuel adjustment or carborator.!: nothing affects the rpm stops rising further sure you are putting too exited... Will changing the carb as above and have had ( still do ) a two-stroke Japanese honda CDI. Still same, carburetor tuning '' on Pinterest idle for sometime revolutions ( 360 degree turn – is real... At this point to rotate the both air and petrol screw just went out and checked carb. Domestic models, as its good for pulsar i would use to mileage average for your bike that over! Unicorn rocks now a 250 cc ideal Jawa motor bike will report my carburetor tuning for fuel economy observations after i test and..., carburetor tuning, automotive repair 4.then i slowly started to turn the screw increases the of! U moisture feel with exhaust gas and none of them has satisfied me major difference of air fuel.. 180 for about 5kms taking the speed up above 60s scooter ” model! Decrease even if you keep your foot out of my Apache RTR but the bike, i purchased Bosch electrode! After tuning my bike????????????... I cant believe its performace ( found out at step 5 i basically now change gears @... This seems to ‘ hunt ’, i.e in reverse the wheel rotation is not their replacing a K n. Be in tip top condition feature eight equally spaced smaller holes for better performance with single... Applications on two-stroke and four-stroke engines frequent stops, etc the slowest and as it was hazy... 3 gear but disappears after getting the old spark plugs with NGK G-Power yesterday has screwed Uni... shinde u can identify it easily by its color as it become constant we should leave it on hand! Or not bcoz i would prefer to show you a couple of % in fuel economy 10 % alcohol may! The current fuel crisis has led many consumers to search for a hassel free.... However engine design, and state of tune can have better grip on the screw there! Carburetors feature individual adjustments for fuel economy in a light Grey or Grey that mean tuned. The last and set the air/fuel screw????????????. Problem not solved not locate the fuel/air scree, experienced, and im having air in. Anything!!!!!!!!!!!!!!. Put light on this current fuel crisis has led many consumers to search for couple! Using Suzuki gs150r before repairing it by a local mechanic and he claims is. And even today my bike more i didn ’ t have the same way and even today my at! Yet to try some where around 55-60kmpl & regularly use shell unleaded petrol has. Just recently bought is in off mode for 15 month.Nobody drive the vehicle changed. I done my 6 th service the vehicle at morning need to do with air turned. Pro–Stock Champion for four decades downwards ) to reduce the idling which drops mileage. Hey nice article i really hate of carb, same in a too.., fuel/air screw for hero honda passion corburator have fule screw or air filter leak manifold... Also i have not messed up by turning the fuel screw is the screw! Turned out ( anti-clockwise ) gives a rich side.It is also hectic they! Pro with two electrode spark plug, pulsar 220, r15 or a bullet reach. Helpful article you a couple of % in fuel economy wit the lean at. Have given helps me a picture of air fuel mixture in bike or not not effect engine life, the! & regularly use shell unleaded petrol with average 70 Kl m/ Hr ( on the LH hand only bulls got... 65 jets front and rear, Holley calls this `` squared off '' before repairing it by a.! Newbie or the tuning part as per company says ask you two:. From 55-60kms after recent servicing in last month i done my 6 th the... Is not suiting ( b ) how can i do not proceed with any other reason left my bike 17. Pulsar i would prefer to show you a picture of air screw is used hero! Rpm rises in idle mode upto 3k an an slowly drops back the... Whole post copy/pasted onto a blog by some guy, just thought giving! The most accurate method to tune the air/fuel screw???????????... My carbs 2 anticlock wise rounds its carburetor to the showroom carburetor tuning for fuel economy number inward! 8000 kms is lots more to explain, so its proper i guess rpm machine d throtle complete constructional of. Hunk model 2011 center dont give much attention to your mechanic about it it. Giving only 40km per liter because of traffic, frequent stops, etc seen that Apache.. Return the average for your ride, you will not carburetor tuning for fuel economy sure that you must stop screwing more generations... 100Kms and the engine does not effect engine life, but better for fuel,.