Wierd sound from Exhaust in RTR FI - xBhp.com : The Global Indian Biking Community

krishnan6015 · 10-11-2009, 03:03 PM

Sorry guys I have raised the issue in RTR/RTR FI ownership thread, I thought this might be the best place for raising issues.
Mods: Please delete/Merge this thread if it does not suit here.

My RTR FI has one issue but the service guys could not able to fix it (Probably they might not understand what Im trying to say).While moving from 1st gear to 2nd gear ,If there is any lag between the clutch and the throttle operation then a wierd sound (tup) is coming from the exhaust(might be the un-burnt air and petrol mix not sure) , But no issues in other gears. If the throttle and the clutch operation in sync then the sound is not coming, While riding in the traffic Im coming across this sound often. Whenever I say this to the service people they say they have tuned the CO. Please help out guys for finding the exact reason behind the scene.Otherwise the bike is awesome

.

Aryan · 10-11-2009, 09:51 PM

Query Approved.

rahul9985 · 10-11-2009, 11:42 PM

I think its a backfire. I dont know how to explain it. It can be caused of a lean mixture as well.

jd666 · 10-12-2009, 02:06 AM

or it could be unburnt mixture burning in the exhaust, but why only between 1st and second.

@krishna - does it happen when you zip off in first and shift to second at high rpm??

krishnan6015 · 10-12-2009, 11:37 AM

Quote:

Originally Posted by jd666

or it could be unburnt mixture burning in the exhaust, but why only between 1st and second.

@krishna - does it happen when you zip off in first and shift to second at high rpm??

ya exactly.I usually move from 1st gear to 2nd gear in-between 4k -5k rpm , If there is any lag in the throttle response then the 'tup' sound will come. In the normal condition (when i dont rip the machine) it behaves normally. I have even changed my style of riding in the bike for this issue ( very quiet in 1st and 2nd gear

). I dont find this issue in my frnd's carb. Just curious about the exact problem

(service ppl are not aware).

jeyessh · 10-15-2009, 08:55 PM

Quote:

Originally Posted by krishnan6015

ya exactly.I usually move from 1st gear to 2nd gear in-between 4k -5k rpm , If there is any lag in the throttle response then the 'tup' sound will come. In the normal condition (when i dont rip the machine) it behaves normally. I have even changed my style of riding in the bike for this issue ( very quiet in 1st and 2nd gear

). I dont find this issue in my frnd's carb. Just curious about the exact problem

(service ppl are not aware).

with svc guy as pillion do the ride and show them the sound...

Chinmay Dangre · 10-16-2009, 12:01 AM

Just place two or three packing at exhaust mouth. there must be one packing in the head for silencer. just try to increase it by one or two number sound should go.

krishnan6015 · 10-21-2009, 10:21 PM

Thanks guys for your inputs, Today I went to castrol bike zone in search of the solution

. They said which ever bike you raise the throttle fast then leave and accelerate again you will find the un-burnt petrol will be burnt in the exhaust only. They said it is a not problem with the bike

, but with the way of riding

. I think I need learn my riding again

amardeep2006 · 10-21-2009, 11:07 PM

I have seen only old bajaj scooters doing misfire , never heard in bikes

Aparajith · 10-22-2009, 12:29 AM

Did u not find the answer in RTR ownership thread? Thats a character of the RTR silencer. It boasts of the widest pipe and its very free flowing without a cat-con. Its very common. Stop bothering about it and enjoy it! Nothing to worry about....

10-11-2009, 03:03 PM	#1 (permalink)
krishnan6015 Senior Member Join Date: Apr 2009 Location: Chennai Posts: 136	Wierd sound from Exhaust in RTR FI Sorry guys I have raised the issue in RTR/RTR FI ownership thread, I thought this might be the best place for raising issues. Mods: Please delete/Merge this thread if it does not suit here. My RTR FI has one issue but the service guys could not able to fix it (Probably they might not understand what Im trying to say).While moving from 1st gear to 2nd gear ,If there is any lag between the clutch and the throttle operation then a wierd sound (tup) is coming from the exhaust(might be the un-burnt air and petrol mix not sure) , But no issues in other gears. If the throttle and the clutch operation in sync then the sound is not coming, While riding in the traffic Im coming across this sound often. Whenever I say this to the service people they say they have tuned the CO. Please help out guys for finding the exact reason behind the scene.Otherwise the bike is awesome . __________________ Accidents hurt - safety doesn't Always Wear Helmet While Riding

10-11-2009, 09:51 PM	#2 (permalink)
Aryan Senior Member Join Date: Jan 2006 Location: New Delhi/ Shillong Posts: 18,274	Query Approved. __________________ ...in search of that perfect world - My Travel Blog :)

10-11-2009, 11:42 PM	#3 (permalink)
rahul9985 rev "UN" limiter Join Date: Jun 2009 Location: Hyderabad Posts: 935	I think its a backfire. I dont know how to explain it. It can be caused of a lean mixture as well. __________________ Biking is not my Passion, it is my Religion! DIY whatever it is..!! More on Facebook A Crash- Broken levers, loose chains - clogged filters, oil stains / Missing panels, clunky gears - scuffed leathers, chilled beers. :D Click to subscribe for SMS's of all upcoming xBhp Hyderabad rides and G2G's

10-12-2009, 02:06 AM	#4 (permalink)
jd666 Senior Member Join Date: Sep 2009 Location: Gurgaon/Faridabad Posts: 3,390	or it could be unburnt mixture burning in the exhaust, but why only between 1st and second. @krishna - does it happen when you zip off in first and shift to second at high rpm?? __________________ My offerings to the gods of speed - - KTM Duke 200 - Yamaha RXZ 5 speed

10-16-2009, 12:01 AM	#7 (permalink)
Chinmay Dangre PePuPuRmOtO!!!!!!!!!!! Join Date: Jul 2009 Location: Pune Posts: 134	misfiring with u r RTR Just place two or three packing at exhaust mouth. there must be one packing in the head for silencer. just try to increase it by one or two number sound should go. __________________ "CorePower" Motorcycle Performance Pune http://chinmay-dangre.blogspot.com/

10-21-2009, 10:21 PM	#8 (permalink)
krishnan6015 Senior Member Join Date: Apr 2009 Location: Chennai Posts: 136	Thanks guys for your inputs, Today I went to castrol bike zone in search of the solution . They said which ever bike you raise the throttle fast then leave and accelerate again you will find the un-burnt petrol will be burnt in the exhaust only. They said it is a not problem with the bike , but with the way of riding . I think I need learn my riding again __________________ Accidents hurt - safety doesn't Always Wear Helmet While Riding

10-21-2009, 11:07 PM	#9 (permalink)
amardeep2006 Senior Member Join Date: Jan 2009 Location: HR-26 (Gurgaon) Posts: 115	I have seen only old bajaj scooters doing misfire , never heard in bikes

10-22-2009, 12:29 AM	#10 (permalink)
Aparajith RIP Kriss :( Join Date: Jan 2007 Location: Chennai Posts: 1,866	Did u not find the answer in RTR ownership thread? Thats a character of the RTR silencer. It boasts of the widest pipe and its very free flowing without a cat-con. Its very common. Stop bothering about it and enjoy it! Nothing to worry about.... __________________ Democracy is when 2 wolves and a sheep meet to decide who is for dinner. Liberty is when the sheep has a gun.

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