ya, I too just tappd the airbox, after changing the Air filter. Noting much could be done with the airbox.

he tuned the Air fuel mixture and later set the idling.
How did he get the right tunning...? - I couldnt understand.. he covered the silencer with a cloth, then put the rpm sensor and tuned the air fuel mixture. Then remvoed the cloth and set the idling.

3000 kms and 2nd service update

Got the 2nd service of the Classic 500 done.

Kms: 3008
Mileage: 27 kmpl (mixed highway+city)
Cost of service: Rs.600/-

• Changed engine oil and oil filter.
• Got air filter cleaned and rest of the boxes of fuse and ECU etc cleaned.
• All the bolts were torqued.
• Clutch wire was cleaned and clutch was adjusted.
• Chain tension was checked and adjusted, chain was lubricated with chain lube and not 90 grade oil.
• General cleaning, wash, polish etc were done.

Checked for any metal or any other residue in the used oil (Dirty job, takes half hour to clean the hand ), luckily its just dirty oil and no metal residue .

The bike was pulling slightly towards right when let free.. It was adjusted with the bolt underneath the dials and handle bar, goes straight now even when let free

The bike is running on a rich mixture. The spark plug is going soot black, specially the one on the right side with 2 electrodes. The absence of Lambda sensor is the main cause as far as I can see, cause there is nothing to maintain a constant air fuel ratio. Mailed this to RE technical manager who said they are already working on this.

Information of Lambada sensor...useful info...

Lambda Sensor

The function of the Lambda sensor (Which is used in the European version) is to support the three way catalytic convertor employed to meet the Emission requirements of Euro3. (which is different in driving cycle / emission values than the Indian requirements) This is called a closed loop system.

The function of this sensor is to optimize the A/F ratio stoichiometric at various emission Driving cycle points to support the Catalytic convertor function effectively.

During other operating conditions like starting, high altitude , high speed acceleration beyond 4000rpm (where the engine requires rich mixtures ), it is deactivated.
Also this will get activated only after the engine warms up sufficiently and oil temperature reaches 32deg centigrade.

The entire engine operating range for any operating conditions are controlled and mapped through ECU enabled by sensors like MAP sensor, temperature sensor, RPM sensor &Throttle position sensor ( Lambda sensor is not used for this)

The Indian program does not require a Lambda sensor, since only an oxidation catalytic convertor is employed to control Indian emission standards and this is known as open loop system.
The entire engine operating range for any operating conditions are controlled and mapped through ECU enabled by the same sensors used in the Europe version.

The complete mapping of the ECU program is optimized with correct fuel mixture ratio to meet the requirements of all engine operating conditions.

Gee Thanks Rizzz!

Thats a good insight into the use of Lambda sensor Ashish !! What's your take on the plugs going soot black ?? Its running so rich that during the first crank in the morning I can smell petrol fumes. Even after cleaning the plugs its black again in a max of 800 ~ 1000 kms !!

From what I have heard from the people who know more than me about this is that the absence of Lambda sensor is not allowing engine to maintain a constant A/F ratio which is making it run rich in the beginning and then stabilizing. This is leading to carbon deposit and smoke which unnecessarily increases compression which is not good for the running parts and leads to early wear and tear.

Doesn't RE have the device required to change the AFR? Bajaj and Yamaha have this device and seem to be able to change the FI to run richer or Leaner.

Whilst this will not address issues if you are riding to various altitudes, this should at least ensure the AFR is accurate for the city you live in.

AFAIK, engines are meant to run rich during start up. Think of it in terms of using the choke.

I agree with the rest of your comments regarding the AFRs.

@Ashish, yes, it is possible for engines to run within a reasonable AFR range without the lambda sensor. As Voodoo_good says, the Pulsar 220 FI and R15 have been handling it without issue all these years. But saying that an open loop FI system works in theory doesn't imply that all open loop FI systems are set up correctly.

Hi Deepak,
Good to know that your bike has completed the 2nd service. Regarding the plugs getting black - seems like the fuel mixture is always rich during the start-up and rich until the engine reaches like working temperature.

You clean the plugs, take for a spin say 40 kms, you see the plugs black. then continue on a long ride and then check the plugs they are brownish! So I feel the EFI is designed like that.

But this doesnt rule out the fact that the richness factor is more in cooler cities like Bangalore.

@deepak
About Lambda sensor its just our apprehension. It required just to meet european norms to support catalytic converter functioning.

And about spark plugs getting black is not going to be an issue as far as i think, cos Air Fuel mixture is kept rich at certain conditions like starting etc. so that bike don't perform sluggish. So driving in city conditions may lead to spark plugs getting black, but won't be a problem.

They need to re-map it !! Rest answers are given by Prabhu and Ashish !!

Thanks for the input !!

Thanks for the input Prabhu !! Yeah its been running in the city mostly.. Will check on a longer run !! Also about the stability issue, my bike was pulling slightly towards the right.. got that set and went on a full blast.. Bike was stable and did not wiggle .. Happy with the way it runs now !!

Thanks for the inputs Ashish !! Ill check the color again on a longer run just after cleaning the plugs and keep you all posted..

Hey deepak ,

I saw your post on another forum where you mentioned that you are using speed or other premium petrol. Did the service engineers mention that. When I asked at bandra RE store, I was told to fill only regular petrol.

Regards
Rahul

The service manager asked to maintain 91 octane or above !! which is speed, x'tra premium or shell super !!

I was at dealership today. On enquiry they told that regular petrol is fine. no need for premium fuel. And I guess I am averaging 23-25 kmpl in mumbai,

By the way how are you guys measuring the fuel consumption?

I am measuring tank full to tank full.. Decently accurate !!

Got my Classic 500 on 29th Mar ...

And I did 550kms in 4-5days

Bike is truly worth it ... Power is awesome, doesn't seem like bullet when it picks up ... its definitely has more pulling than Pulsar 200. Its attention grabber for sure, everyone pointing at this monster and talking about it. I specially liked the maroon color, its more vibrant and goes well with chrome.

-The sound on stock silencer is really soft. ( I am shifting to bend silencer today when I give for servicing )
- Performance is was really awesome till I hit 400km, but there after it deteriorated. I am hoping 1st servicing will solve that.
- The tick tick sound on low rpm is irritating n hoping it will go away some day. Tho read its from auto decompressing .
- I was not very happy with suspension specially for Mumbai roads, the front could have been little more smooth.
- Kick start is really easy, you don't need amp meter.
- I was getting 35/lit but sure it has dropped after 400km
- Also when I hold the handle with right hand the handle vibrates little, even my friend tried it. Showed it to RE they said they will check up on 1st service.
- Again I have to say, the pulling power is awesome !!
- Its really comfortable for pillion riders, I had multiple comments from gals n guys even without asking them. Just 10min into the drive n u hear them say " wow this is so comfortable "
- Breaks are really good, the rear ones gets locked without any effort. And the worst part is you don't even feel when its locked ... the bike still runs so smooth
- Gears where really smooth till 400km I guess .. there after I had to press twice sometimes to change it. Will get the clutch adjusted when I give for servicing.
- The key cover of the petrol lid came off the 1st day. I hope they change it than fixing it somehow.


I am on my way for 1st servicing ... would give you guys the feedback after that.