Air Filters - Universal Thread

[harshitcyborg]

How to Upjet the carb...?

I recently bought K&N air filter for my bike and installed it in my bike. The mechanic that i went to dint re-jet it. He simply tuned my carb. I dunno why he did this. Maybe due to shear laziness. He was not my regular mechanic. His shop was closed and i had to opt for another one..! Can we rejet the carb on our own.. Can anyone tell me how to do it...?

[PRANAV D]

Thanks bro.. btw.. got my bike fixed yesterday.. my disc failed totally.. it was useless.. so i took it to the showroom.. he fixed it.. and also the engine sound reduced.. but the front tyre is really tight in rotating.. but my disc isnt really effective.. he says it has absorbed oil.. so it will take a long time to get going well.. well ill get the 'tippets' checked :P thanks for the info bro.. oh and btw. he says the chain needs to be replaced.. i can feel that.. hope im not goin offtopic.. sorry.. just avoiding multiple posts.. im noob at forums.. anyways.. can a local mech. do it?? btw that chain costs hefty.. 800-1000 + labor charges.. dad will be serious.. he is kinda budget type.. can the local mech replace chain??

Well Communicate with Visitor messages! Youve got one already!. This is after all "Air Filters" Thread and lets not go so ghastly off-topic

[ajay_vishvanathan]

Thanks bro.. btw.. got my bike fixed yesterday.. my disc failed totally.. it was useless.. so i took it to the showroom.. he fixed it.. and also the engine sound reduced.. but the front tyre is really tight in rotating.. but my disc isnt really effective.. he says it has absorbed oil.. so it will take a long time to get going well.. well ill get the 'tippets' checked :P thanks for the info bro.. oh and btw. he says the chain needs to be replaced.. i can feel that.. hope im not goin offtopic.. sorry.. just avoiding multiple posts.. im noob at forums.. anyways.. can a local mech. do it?? btw that chain costs hefty.. 800-1000 + labor charges.. dad will be serious.. he is kinda budget type.. can the local mech replace chain??

[PRANAV D]

ok.. thanks.. but whats a tappet??

Well! A tappet is something which facilitates the movement of the valves when the camshaft rotates. Without the tappet the valve would get damaged due to the direct force exerted by the camshaft. The theory part is quite long but you dont need to know it
Just tell any decent mechanic to "check the tappets as you suspect its making noise" and he will do the needful.!

P.S- some of the mechanics pronounce it as "tappit", so say that if he doesnt understand "tappet"

[ajay_vishvanathan]

Sorry for the tardy reply Didnt check on the Air Filters Universal thread.
THat sound is funny!! Get your tappets checked, it could be tappet noise (clattering kind of sound). Chain or sprocket seems unlikely, though since you thought about it try checking it. But i think it could be tappet noise.

And about the revs even my Uni vibrates at 5K RPM at 60 the most. Then it gets sorted out once i reach 70 or so. So thats normal i guess.

ok.. thanks.. but whats a tappet??

[PRANAV D]

here is the audio..

i also have a feeling that when i rev my bike.. i.e. at normal running conditions.. the bike is really harsh at 4k rpm.. any gear.. but when it reaches 5k rpm its smooth.. but since i drive at about 50 to 60.. the rpm is usually around 4k it bothers me a lot.. its like the engine is freakin stressed out.. the rev sound is like metal clattering.. not exactly.. but its kinda stressed out..

Sorry for the tardy reply Didnt check on the Air Filters Universal thread.
THat sound is funny!! Get your tappets checked, it could be tappet noise (clattering kind of sound). Chain or sprocket seems unlikely, though since you thought about it try checking it. But i think it could be tappet noise.

And about the revs even my Uni vibrates at 5K RPM at 60 the most. Then it gets sorted out once i reach 70 or so. So thats normal i guess.

[ajay_vishvanathan]

please help me.. this thing is turning me crazy.. also when i drive.. some sound comes.. like a train passin by.. i have a feeling that my sprocket and chain needs to be checked.. MY ENGINE IS GOIN MAD!!!

[ajay_vishvanathan]

Well how frequently one has to clean the air filter depends on the riding conditions etc. Though at every service which should be at every 2500Kms your bike covers, ask your mechanic to clean the filter, or replace depending on its condition.
Well typical symptoms of a choked air filter would be
1. Jerky throttle response the bike jerks when you open the throttle and then moves forward. This happens at moderate speeds of 40-50 and above, doesnt happen in the first gear at very low speeds.

2. In the rainy season too the muck brought up by the rear tyre can clog the air filter making it soggy wet!!. When this is the case the bike would not rev above 6-7K RPM while running in gear that is.

Yes you may post the sound clip here, so that we could detect any irregularity in the sound etc.

here is the audio..

i also have a feeling that when i rev my bike.. i.e. at normal running conditions.. the bike is really harsh at 4k rpm.. any gear.. but when it reaches 5k rpm its smooth.. but since i drive at about 50 to 60.. the rpm is usually around 4k it bothers me a lot.. its like the engine is freakin stressed out.. the rev sound is like metal clattering.. not exactly.. but its kinda stressed out..

[PRANAV D]

how frequently am i supposed to clean the air filter of unicorn.. p.s. i didnt remove the snorkel.. cant risk my engine.. but when i rev it.. i dont like the noise.. is there any way to put it down?? shall i record the sound and post it here?? so that you can get to know more of my bike.. pls..

Well how frequently one has to clean the air filter depends on the riding conditions etc. Though at every service which should be at every 2500Kms your bike covers, ask your mechanic to clean the filter, or replace depending on its condition.
Well typical symptoms of a choked air filter would be
1. Jerky throttle response the bike jerks when you open the throttle and then moves forward. This happens at moderate speeds of 40-50 and above, doesnt happen in the first gear at very low speeds.

2. In the rainy season too the muck brought up by the rear tyre can clog the air filter making it soggy wet!!. When this is the case the bike would not rev above 6-7K RPM while running in gear that is.

Yes you may post the sound clip here, so that we could detect any irregularity in the sound etc.

[ksml]

ok thnx pranav..i'll keep a tab on the mileage and performance..
this forum is so active and helpful when it comes to biking queries.! i'm goin to recommend this site to all my biker friends..
thnx to all the mods and other active bikers..

[ajay_vishvanathan]

how frequently am i supposed to clean the air filter of unicorn.. p.s. i didnt remove the snorkel.. cant risk my engine.. but when i rev it.. i dont like the noise.. is there any way to put it down?? shall i record the sound and post it here?? so that you can get to know more of my bike.. pls..

[PRANAV D]

Ya that should be fine but the filter will still need to be replaced little faster than normal, But i guess that is ok as the actual yellow filter costs 90 Rs. only. And if you are going to clean it very frequently as you said then you will come to know when the filter gets dirty and needs to be replaced, thus preventing you from riding with a choked airfilter. So No worries carry on

Although keep a tab on the performance and mileage of the bike after doing this, since removing the snorkel will cause more air supply to the carburetor and can make the bike run lean! This is just a feeling i have!!

[ksml]

ok so if i very frequently remove the air filter and rub off the dust particles then its fine to ride without the air filter snorkel..is that right.?

[PRANAV D]

^^^ Yes that is the Air Filter Snorkel. Well after removing that get ready to replace your air filter more often as it will get dirtier! And if you continue to ride with a choked airfilter then it will start harming your engine. Thats the only disadvantage i can think of

[ksml]

this is the pic of that air cleaner cover that i removed..pls tell me if there is any harm to the engine or filter by removing it..coz i'm loving the revving sound of the engine without it..