Re: 200NS: Very strange issue with acceleration

Hey, im having the same problem with my NS. The problem is this is a bike withh high compression ratio and it has the air filter inlet in the front and the company has jetted it so lean that when the carb gets dirty it becomes super lean so when u get extra air into your engine the main jet isnt able to supply enough fuel through the emulsion tube and also we have C.V. carburettors constant vacuum.
So when the mixture becomes lean and the engine slows down, the vacuum reduces and the slide closes to avoid load on your engine and the bike slows down all the more

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Re: Pulsar 200 NS Owners Review and Experiences

Buddy, this site wont open it has ******
But nothing any one says is going to change what I know. This site may be wrong or you mustve read wrong but you cannot have a fuel screw in your carburettor and il tell you why
When you set the carburettor optimum, you must obtain maximum vacuum i.e. maximum idle speed with the screw. If you have a fuel screw, if you keep opening the screw, the idle speed will keep increasing even though it may be too rich until the engine cant take any more then it will start slowing down. At the maximum vacuum point of the fuel screw, your mixture will be so rich that you will get black smoke from your exhaust. Ie. Youll be getting maximum vacuum even when your mixture is not correct.
But if you have an air screw you will be supplying only the required amount of air to burn a particular amount of fuel. Fuel is supplied through the slow speed or pilot jet and air is supplied through a small passage which is regulated by the air screw. I know my stuff dude. Ive fixed carbs which are beyond repair, trust me

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Re: 200NS: Very strange issue with acceleration

Hi Denver

This sounds convincing. So what do you suggest we should do?

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Re: 200NS: Very strange issue with acceleration

Get the carburettor serviced, if it still continues, try changing the spark plugs because the other day, I removed the two side plug caps to see how the bike runs and it started jerking all the more so it could be a problem of the plugs. Now i know the side plugs have a different heat range from the center plug but the side plugs are very poor quality so you can try a plug of another company, bosch or NGK R, i wouldnt worry about heat range so much with 3 spark plugs.
If it was jerking with the center plug cap attatched that means my center plug couldve been defective
Il try the other two plug caps and let you know how it performs

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Re: 200NS: Very strange issue with acceleration

It could also be the float valve problem. If the float valve sticks, the bike will run smoothly for little while till the fuel in the float chamber becomes less and then the engine will receive uneven amounts of fuel and will jerk or speed may reduce. When i ride at a constant speed, my bike runs smooth for little while and after some time it starts jerking but I never thought about wind conditions. Il let you know if im having the same problem because of the wind

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Re: 200NS: Very strange issue with acceleration

But dont service the carb and change the plugs at the same time, you wont know the fault then

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Re: 200NS: Very strange issue with acceleration

Ok I will check. But could all these happen with brand new bike which is just 8 days old? My Unicorn never had any problems in 10 years left alone 8 days. Also the rear disc break, it makes a sound when applied as if two metal sheets are rubbing dry with each other. Front is Ok.

Re: 200NS: Very strange issue with acceleration

Ok apologies for barging in. I have the same feeling in my Suzuki GS150R. In top gear with the RPM around 4K, I feel the bike is going to move to reserve (fuel), but eventually that is not the case. When I raise the RPM furthermore or downshift and raise the throttle, thing get back in normal. Is this due to lean mixture? Will this increase fuel efficiency?

Re: 200NS: Very strange issue with acceleration

^^ you know, im starting to think that the carbs in our bikes are making it worse. It just becomes more evident due to many causes, like tuning, the quality of fuel we use, and the state of the carb itself.. Even i have the problem , but its very slight and barely noticable..
Just clean your carbs, get good quality fuel, and get it tuned properly. Try using fuel like shell super or something for sometime, that kinda helps clearing up the jets. If you dont have access to shell, try getting the 3M fuel additives [ im not saying use it regularly, but occasionally to clear up some of the muck] It does clear up a lot of the problems.
Really helps, i remember when this problem was more evident, i cleaned the carbs and used shell super for some time, viola, all better.. later i changed my diaphragm, it became even more smoother.. Now i occasionally use shell super, and whenever possible i only fill from shell petrol bunks, its so much better now..
@viks783 Call the sales rep guy who helped you get the bike, tell him all this neatly and he might help you out.
Go to the service center and ask them to properly check the carb. Tell them its acting as if its blocked and tell them to check it in front of you. If they say no way, ask for the manager and tell him all this, if hes also useless, threaten to email bajaj customer care and screw their lives.. theyll cave in, you just have to be pushy. Theyll just tell random BS, but its your right to get it checked and be covered under warranty. Theyve tricked me for a problem i couldve claimed warranty for, so beware..

Re: 200NS: Very strange issue with acceleration

Those were some inspiring words. Sure I will be pushy. I am not the kind of guy who will just tolerate and move on. At one point of time when I was in Kerala during servicing my old Bajaj Spirit no Bajaj service center was accepting that vehicle and rejected saying we don't have skilled labour for this type of vehicle!! One dealer didn't identified it as Bajaj vehicle! Then I escalated properly and very next day the same dealer called me up and said please bring it we will service it.

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Re: 200NS: Very strange issue with acceleration

Much obliged.. *bow* :P
Onwards now.. screw their lives..

Re: 200NS: Very strange issue with acceleration

My sir has a gsx150r he says when it missfires he removes the throttle position sensor wire from the carb. Most old bikes dont use the throttle position sensor. I think our bikes need it to advance the timing when we accelerate too fast just by a fraction so may be sometimes because of electronic failure it misfires. Can be the same problem in the ns. Will try and let youll know.
I gave my bike for servicing yesterday, will get it back today. Got my carb serviced.

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Re: 200NS: Very strange issue with acceleration

You mean GS150R, right?
After removing TPS wire, what does he do with it?

Re: 200NS: Very strange issue with acceleration

Changed my tires , moved to MRF Revz FC (110/70 R 17 TL) for the front and RevzS (130/70 R 17 TL) .

I had to settle for 110/70 in the front as 100/70 was not available , front feels a bit heavy.

Is is this normal ? Anyone who has upsized the front tyre can throw some light on it.

Re: Pulsar 200 NS Owners Review and Experiences

[MENTION=53602]pv1984[/MENTION] Can you please post review of the tyres, including wet,dry grip, offroad behaviour and how it handles the slush. It's a humble request.

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