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**GauravD** · 02-02-2016, 04:28 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by xplod566 View Post

Are you from bangalore ?

Gurgaon bro

**RohIIT** · 02-02-2016, 04:28 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by GauravD View Post

Thats good info bro...

A thought just came up ..

There is a point mentioned in the above link, I quote "(2) the exhaust gas analyzer machine's nozzle should not be put into exhaust end outlet, because the catalytic converter reduces the harmful gas emission, so the PUC machine nozzle has to be inserted before cat-con, and company has provided a bolt specifically for this purpose in exhaust before cat-con, which can be opened with a 10 no. spanner. open the bolt and insert the nozzle of gas analyzer there, and then take readings."

Whenever I have taken my bike for CO tuning they just stick the analyzer nozzle into the exhaust pipe and then set it at around 1.5 - 1.6 ... Considering the fact that the cat-con reduces the amount of harmful emissions does it mean that CO readings are skewed; In which case any carb tuned this way to a setting of about 1.5 is running rich if we would measure it via the bolt provided for the same ? Any sense in what I am thinking ?

Some background based on this thought process - During my tour I got an overall average of 38 kmpl which were highway speed runs. Later on when I took the bike for tuning it turned out that it been running slightly lean. The svc guy had tuned it to 0.9 (based on PUC readings) which actually meant that it was actually more than about 0.9 since the CO would have been higher before the cat-con. Now that I got the bike tuned to 1.5 again through the exhaust pipe the mileage has dropped to 32 - 33 since I may be running rich .. Savvy ? Any thoughts ?

Plug color will easily say if your are running lean or rich.
Tan= Perfect
Black/ dark tan = Rich or slight rich
White/greyish = Lean

Your analogy is wrong. Gas analyser is used to measure CO being emitted to atmosphere from the BIKE, now manufacturers provided the 10 bolt to check the reduction of CO by use of cat con . If needed they would work on it to improve emissions. But see this way , at the end only thing matters is which exhaust is emitting, not the engine. So if we measure CO from engine exhaust * before catcon* it only gives us readings that is useful for engine performance guy to calculate combustion/thermal efficiency ( by heat balance bla bla bla ) . So for PUC wala , he will only insert it into catcon to see readings and its that which matters not what engine is emitting.

**krixna** · 02-02-2016, 04:49 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by GauravD View Post

Guys any thoughts around this ? [MENTION=72200]xplod566[/MENTION], [MENTION=75352]jbm_guy[/MENTION], [MENTION=74543]krixna[/MENTION], [MENTION=54720]kany1991[/MENTION]

Since a bolt has been provided before the cat, it must be for tuning based on exhaust gas analysis. As for the PUC, they are concerned what you spill into the atmosphere, so they measure at the end.

**GauravD** · 02-02-2016, 05:04 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by krixna View Post

Since a bolt has been provided before the cat, it must be for tuning based on exhaust gas analysis. As for the PUC, they are concerned what you spill into the atmosphere, so they measure at the end.

Originally posted by RohIIT View Post

Plug color will easily say if your are running lean or rich.
Tan= Perfect
Black/ dark tan = Rich or slight rich
White/greyish = Lean

Your analogy is wrong. Gas analyser is used to measure CO being emitted to atmosphere from the BIKE, now manufacturers provided the 10 bolt to check the reduction of CO by use of cat con . If needed they would work on it to improve emissions. But see this way , at the end only thing matters is which exhaust is emitting, not the engine. So if we measure CO from engine exhaust * before catcon* it only gives us readings that is useful for engine performance guy to calculate combustion/thermal efficiency ( by heat balance bla bla bla ) . So for PUC wala , he will only insert it into catcon to see readings and its that which matters not what engine is emitting.

Thanks guys for the details. I get your points and agree with you however maybe I wasn't able to put across my question clearly. Please bear with me on this ... just trying to get my understanding straight -

Chronology of events -
1. My brother took the bike to the service center for getting the carb tuned and got it done. On coming back he told me that the carb tuning has been done by putting an analyzer into the exhaust like the PUC guys
2. PUC certificate guy checks for renewal of certificate .. Reading comes in at 0.9
3. I again take it to service center and again have the bike tuned to 1.6. The svc guy inserts the analyzer through the exhaust and tunes the carb instead of through the bolt.
4. Now going by 2 facts
(4.a) Bajaj stating that CO tuning to be done by 10 bolt removal before the catcon at 1.6 (default)
(4.b) The service center tuning to 1.6 after the catcon

Question - Will not that mean that the engine has been set to run rich since there would be emissions reduced by the catcon; so to get an emission of 1.6 the service guy would have increased fuel intake more than what it normally should be ?

Apologies guys for bugging you on this bit ...

**krixna** · 02-02-2016, 05:37 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by GauravD View Post

Thanks guys for the details. I get your points and agree with you however maybe I wasn't able to put across my question clearly. Please bear with me on this ... just trying to get my understanding straight -

Chronology of events -
1. My brother took the bike to the service center for getting the carb tuned and got it done. On coming back he told me that the carb tuning has been done by putting an analyzer into the exhaust like the PUC guys
2. PUC certificate guy checks for renewal of certificate .. Reading comes in at 0.9
3. I again take it to service center and again have the bike tuned to 1.6. The svc guy inserts the analyzer through the exhaust and tunes the carb instead of through the bolt.
4. Now going by 2 facts
(4.a) Bajaj stating that CO tuning to be done by 10 bolt removal before the catcon at 1.6 (default)
(4.b) The service center tuning to 1.6 after the catcon

Question - Will not that mean that the engine has been set to run rich since there would be emissions reduced by the catcon; so to get an emission of 1.6 the service guy would have increased fuel intake more than what it normally should be ?

Apologies guys for bugging you on this bit ...

Let me tell you a few things I know about a catcon. Read wiki or google up for more info. Ok. First job, it reduces harmful oxides of nitrogen into nitrogen and oxygen. Second, it oxidizes carbon monoxide (our dear CO) into carbon dioxide. Third, it oxidizes some hydrocarbon into carbon dioxide and water. Mind you, it converts only part of the exhaust, to keep emission levels low. It is impossible to make a cat that gives out only carbon dioxide, nitrogen and water.

So as you can see, an efficiently working cat will have less CO coming out of it, than what enters it. So where should we be checking for CO? A fuel efficient engine will have 1.5-2.0 CO *coming out after combustion*, not after the cat.

**GauravD** · 02-02-2016, 05:44 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by krixna View Post

So where should we be checking for CO? A fuel efficient engine will have 1.5-2.0 CO *coming out after combustion*, not after the cat.

Bullseye !! Got it bro.. Thanks all for bearing with me on this.

**krixna** · 02-02-2016, 06:07 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by GauravD View Post

Bullseye !! Got it bro.. Thanks all for bearing with me on this.

Not even 10% as difficult as bearing with the ASS guys bro

Cheers.

**vivek7593** · 02-02-2016, 08:45 PM

Re: Pulsar 200 NS Owners Review and Experiences

Anyone has idea about spark leaking from spark plug.. I went and replaced the the wire, plug cap with gourmets, and even spark plug. My main plug leak sparks when rpm is below 3k.. And its pretty worse have to keep rpm above 3k... And dead cold engine in morning wont start up..

Sent from my AO5510 using xBhp Connect mobile app

**GauravD** · 02-02-2016, 08:53 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by krixna View Post

Not even 10% as difficult as bearing with the ASS guys bro

Cheers.

Could not agree more... I mean try to beat this.. I went to the ASS guys to get the sprocket changed and i had to show him how to get the chain off ... The A-hole was not being able to find the master link... Beat that !

**GauravD** · 02-02-2016, 08:58 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by vivek7593 View Post

Anyone has idea about spark leaking from spark plug.. I went and replaced the the wire, plug cap with gourmets, and even spark plug. My main plug leak sparks when rpm is below 3k.. And its pretty worse have to keep rpm above 3k... And dead cold engine in morning wont start up..

Sent from my AO5510 using xBhp Connect mobile app

Mate .. Do not wanna venture into unknown waters however you may wanna check the link below for spark plug issues etc

http://www.ngkspark.co.nz/spark-plugs/technical-information/spark-plug-analysis

May prove helpful...

Could the plug be cracked or an issue with the insulator ?

**krixna** · 02-02-2016, 09:30 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by GauravD View Post

Could not agree more... I mean try to beat this.. I went to the ASS guys to get the sprocket changed and i had to show him how to get the chain off ... The A-hole was not being able to find the master link... Beat that !

Not sure about that, bro. Some O ring chains don't have a master link, you have to remove the swingarm to replace the chain.

**GauravD** · 02-02-2016, 09:39 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by krixna View Post

Not sure about that, bro. Some O ring chains don't have a master link, you have to remove the swingarm to replace the chain.

Mine did

**vivek7593** · 02-02-2016, 09:45 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by GauravD View Post

Mate .. Do not wanna venture into unknown waters however you may wanna check the link below for spark plug issues etc

http://www.ngkspark.co.nz/spark-plugs/technical-information/spark-plug-analysis

May prove helpful...

Could the plug be cracked or an issue with the insulator ?

Thanks for the link bro checked it but none of it matches my problem
But its pretty close to flash over problem but.. There no mark of spark over the plug..
Just spent thousands of rupees in servicing and still bike isnt problem free 😥

Sent from my AO5510 using xBhp Connect mobile app

**GauravD** · 02-02-2016, 10:20 PM

Re: Pulsar 200 NS Owners Review and Experiences

Originally posted by vivek7593 View Post

Thanks for the link bro checked it but none of it matches my problem
But its pretty close to flash over problem but.. There no mark of spark over the plug..
Just spent thousands of rupees in servicing and still bike isnt problem free 😥

Sent from my AO5510 using xBhp Connect mobile app

Bro when you say leaking sparks .. what do you exactly mean by it ?

**Gnayak** · 02-02-2016, 10:28 PM

Re: Pulsar 200 NS Owners Review and Experiences

My 200NS. I call it The Goblet.

Our NakedWolves Mangaluru group recently celebrated 3rd anniversary.

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Pulsar 200 NS Owners Review and Experiences

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