Re: Karizma/Karizma R


I don't think ignition coil issue here. Engine would heat up too much and shuts off in case ignition coil is overheating. The missing/jerking definitely points to fueling issue. Since they replaced the carb, I am assuming no issues in carb. My guess is, either the tank/fuel cock has problem, or the choke is causing the problem.

Re: Karizma/Karizma R

cdi loose connection ?

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Re: Karizma/Karizma R

I think any issue related to CDI or ignition coil would shut the engine off. That's my understanding.

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Re: Karizma/Karizma R

The choke like the "B" cable tends to get jammed once in a while leading to many strange fueling problems , which is difficult to trouble shoot...The way to check is to operate the choke without engine in ON condition and see how it behaves..For the first 3~6 mm of pull it should be loose and then should get tight to pull. On releasing and returning the lever to rest, again you should be able to feel the slack ,easy pull for the first 3~6mm or more...If it is not there then suspect the cable improperly adjusted or getting stuck...there is a ball bearing in the Choke pull ring to create a friction with the mounting to give friction, so that choke will remain in the position to which you pull...alternatively this steel ball can be removed with a little DIY and then the lever will auto return due to choke end spring...

A Spark Plug with soot on it indicates either oil leak or rich AFR...If the Soot is dry it is rich and if it is Oily deposit then it is Oil leak in to combustion chamber. If the choke is stuck then a dry soot and poor FE will result

Re: Karizma/Karizma R

After installing new air filter missing/jerking problem gone. Sorted out

Re: Karizma/Karizma R

Good to hear that. What was the condition of the previous air filter? When did you replace air filter last time? Or when did you clean it?

Another question, you said you had problem going to higher speeds on hills, especially on steep gradients. Did that problem solve?

Re: Karizma/Karizma R

What's the factory/stock turn count on pilot screw of this carburetor?

Choke issue solved now or it's still there?

Re: Karizma/Karizma R

Lol just as i expected .. the air filter and carb jets are the first and second things u need to check under such symptoms from my experience.but since you replaced the carb (how lucky, u got a new carb ) i suspected the air filter (actually the air filter doesnt have to visibly 'appear' dirty or clogged up.. these paper type filters are affected by water/moisture and it causes the paper fibers to bind/clog up and thus minimize air intake)

Re: Karizma/Karizma R

This was the stock air filter 9000kms old, I did not replaced filter before this. Local mechanic said this filter is blocking air flow at high rpm above 4k due to its faulty paper design. May be SC cleaned air filter during 1st, 2,nd, 3rd service or may be not.

Regarding hill climbing, I dont know now coz am on plains right now and hills is 400 kms away from here. I think faulty air filter was the culprit. Problem was while climbing, the point ( 4000-5000 rpm ) where missing/jerking happening , engine gave up to go beyond 4-5k rpm on hills but on plains missing/jerking was there but engine went above 4-5k rpm.

here experts suggested me to set 3.5 turns long time back when I posted this problem so I did and issue solved, but after some time again apeeared.

Choke is operating- if the engine is off- I have to open throttle little bit along with choke lever fully open

If the engine is at idle speed- while giving choke, engine shut down immediately ( mechanic says this is normal in ZMA? )


Its the result of mails, pressure, followups etc to hero motocorp north Area Manager...LOL they replaced carb. examined by senior mechanics of 3 SC in Lucknow and they are not able to identify problem. Shows the quality of Service and staff of heromotocrp.

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Checked fuel tank, knob for any deposits but all clear.

My bike is 10 month old.

Thanks Sir for your response, today will check the same with my local mechanic.

Re: Karizma/Karizma R

Even if it was cleaned, there is a possibility it was damaged due to moisture (could be blow by/oil moisture/water during water wash etc..) no amount to cleaning it with compressed air will fix it..trust me (my mech was like 'saar aap pls ek naya air filter leke aayiye' after i made him clean it twice in a week , in my case it was damaged due to a fuel leak in to the air filter due to some pathetic work by the asc at my 4th service)

yes a warm engine will shut down when u use the choke.. its absolutely normal. (how did i learn this ? well my cousin had an rx100 that did not have an ignition key lol and i used to observe him shut it down by doing something under the tank.. i was in class 8 then.. then when a friend had a tvs xl super and lost his key, a mech showed us how the choke can be used to turn off the scooter since it was un-geared - the geared bikes apart from choke u could turn off/stall by just using releasing the clutch abruptly in first gear and using brakes..this i learnt from my mechs m80 lol)

Re: Karizma/Karizma R

Could be the carburettor slide getting stuck. It has been a problem in a few zma's. Please go to search and look for this problem in this thread.

Re: Karizma/Karizma R

So, we don't know the factory turn-count on pilot-screw?

I'm just guessing here: when throttle is opened a little bit, engine sucks in additional air through main venturi along with insignificant rise in fuel content. Then you observe a sudden surge in RPMs on Tacho.

You can test choke operation once by adjusting

• pilot-screw to stock/factory turn-count
• idle-screw to sustain idling at stock position of pilot-screw

Re: Karizma/Karizma R

the problem was solved after replacing the air filter.. read a few earlier posts

Re: Karizma/Karizma R

No 9ah battery will be a direct fit. You will have to bend the holding bar a little bit. Not at all a hassle. Go for the Amaron eyes closed.

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Speak to Umesh: +917303505370/+918384075047 or head over to the Western Tower next to the Bisleri factory and ask anyone for the Amaron battery guy, they will re direct you. If he doesnt have stock, why not order online?

Re: Karizma/Karizma R

Just wondering if anyone knows which month of 2013 the last batch of the outgoing model of Karizma-Rs (old design) were manufactured by Hero Motocorp. Just curious to know. Thanks.