Plz dont make me throw my 250 odd km used tires to the bin.

You are right bro. i did not blame the engine coz its way to early something can happen to engine as my bike completed 1 yr few days back. I totally agree with you about keeping care of the chain slack n lubricating it and i do get it done every 10-15days. But its just that i am not being able to relate the sound to the chain being the problem. The sound doesnt comes from rear wheel side chain but instead from the engine side( i mean the whole assembly but cant pin point the exact place of sound). I guess the part of chain which goes inside should be the problem. Sorry if i am sounding noob.

@maverickk - You were sure that the sound was coming from the engine, that is why told you about piston. It must be a loose chain then, check again.

P.S : Even new bike can have busted piston / engine seizures

I said i am not sure but had a feeling and that too went away after that tip u gave me to check regarding pistons.

Its a very good oil, but unfortunately I've had some bad experiences. Dont worry, keep checking the oil level atleast every 500kms. If it is dropping fast, shorten your oil replace interval (which will then make you bankrupt and you'll switch to something more VFM:P )

Anyone?
Please do post some pics

Pics please

Well, I get Motul oils for FREE so I'll try it and post the results here

why are you all sticking to 100/80 or 120/80 ??

how about 120/90 or 100/90?

Same with me Bro. I too thought some thing was wrong inside the engine, cos the sound comes from the front part.

As you said, the front sprocket area would be the source.

P.S. Got some extra cash yesterday, so i'd be replacing the chain set this Saturday. It cost's 1000 INR here in my place. Will post the updates.

Ah, thanx bro. You have no idea how relieved i am coz till now i had a feeling i am the only one having this kind of problem. Now i feel confident that the front sprocket and chain part must have been the culprit. I would be eagerly waiting for your review and the changes you have noticed after replacing the chain set especially regarding this noise we are experiencing. I have been dying to restore my RTR back to its glory. Yes it costs around 1000 INR here too.

till then u make sure of wat problems ur bike is causing. do this exercise n probably u urself might get to know the issue..
1) Park ur bike on the main/center stand.
2) Start ur bike (n preferably have another person to help u out) and run the bike starting from the first gear.
3) As it is running check the nature of the chain in between the 2 sprocket(front & Rear) i.e., if the chain is having a sinusoidal(wavy) kind of motion. This is ur first hint to show that it is something with ur chain.
Note: do not concentrate much on the sound in the above step.
4) Now, since u tell that the sound is from the engine side of the bike.
Ask ur friend or companion to shift gears as u check at lower side of the chain. u may find that the wavy nature of the chain will be in contact with some other part of ur bike. this is caused because when u accelerate n de-accelerate, there is a kind of jerk in the chain movement. n due to this the chain may hit the chain sprockets or any other substance coming in the path of the wavy chain moment when u throttle or release it.

i have had the same issue, n got my chain kit replaced. now its fine n no more noise. so check it thoroughly. if u were not able to still find out then u might have to get ur bike checked thoroughly from a good n trustworthy mech..

Here its of 1300 INR. How come this difference?

@Maverickk - Do follow what abhirai has guided, that is the easiest way to check the chain and sprocket life. But what I am thinking, if your bike is just 1500kms old, how come the chain is showing the problem.

@krish1417 - Don't worry about the petrol hiccup problem. It happens when the tank is empty.
And are you sure its carbon and not dirt mixed with oil?

1500kms is the right time for it to happen. because the the factory made sprockets n chain r brand new n wouldn't have subjected to wear.
after using it for some time, the parts in the bike get worn out little. this is y the run-in period is important as well as the first service. in the first service, the major work done to the bike is adjusting of the loosened parts n adjusting the chain to suit the worn out or deformed sprockets.
but in this case it has taken 1500kms for it to happen or first service wouldn't have been done up-to the mark(if it is the problem with the chain kit).

Hi there. as far as i know it must b an air block. When was ur bike last serviced?