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**AK3D** · 03-14-2014, 12:20 AM

Re: Karizma/Karizma R

Originally posted by ankit.traveller View Post

Now my ZMA is 6 months and 6k old, had a long tour also. All is well except cold starting problem. Even left for only 1 hr after ride, I have to use choke again for starting and it takes few kms to warm up engine and to get idle speed every time. It feels that there is no petrol and bike jerks for few kms, after some time it normalize.

I checked this prob with SC but they say it is normal, though once they adjusted AFR setting in second service after reporting this problem but still it persists. What could be the reason?

Forget the ASC, tune the AFR screw yourself. These are symptoms of a lean engine. Did you do a plug reading?
Ride your bike for a few kms. While it is on, ensure your idle setting is at about 1.3-1.5K when hot.
Screw in the AFR screw CLOCKWISE till it stops - don't force it. Count the number of FULL turns (360 degrees) that it went in, and count half or quarter turns, if any. This is to return to factory setting if necessary.
Slowly turn the AFR screw anti-clockwise - 3 full turns and one half turn. Note the idle reading, if it goes higher, bring it to 1.4-1.5K RPM. See how the bike behaves after this.

**ravi@17bhp** · 03-14-2014, 12:20 AM

Re: Karizma/Karizma R

Originally posted by ankit.traveller View Post

AFR setting already adjusted by SC.

Take a line tester screwdriver and completely close the AFR screw (clockwise rotation). Then turn the screw anti-clock wise for 3.5 full turns. Ride the bike for around 10 kms, then set the idle rpm at 1400 by adjusting the idle screw. Hope you know where AFR and Idle screws are located. Then observe the results. If the problem still persists, then we will look into other things.

I am certain that there is no issue with carb sliding or diaphragm. Air leak would cause idle issue, especially varying idle.

**AK3D** · 03-14-2014, 12:50 AM

Re: Karizma/Karizma R

Originally posted by ravi@17bhp View Post

Take a line tester screwdriver and completely close the AFR screw (clockwise rotation). Then turn the screw anti-clock wise for 3.5 full turns. Ride the bike for around 10 kms, then set the idle rpm at 1400 by adjusting the idle screw. Hope you know where AFR and Idle screws are located. Then observe the results. If the problem still persists, then we will look into other things.

I am certain that there is no issue with carb sliding or diaphragm. Air leak would cause idle issue, especially varying idle.

I already asked him to do this a few months ago, how will one know what the ASC has done till it is verified by oneself

.

----consecutive posts auto-merged-----

Originally posted by ravi@17bhp View Post

Take a line tester screwdriver and completely close the AFR screw (clockwise rotation). Then turn the screw anti-clock wise for 3.5 full turns. Ride the bike for around 10 kms, then set the idle rpm at 1400 by adjusting the idle screw. Hope you know where AFR and Idle screws are located. Then observe the results. If the problem still persists, then we will look into other things.

I am certain that there is no issue with carb sliding or diaphragm. Air leak would cause idle issue, especially varying idle.

I already asked him to do this a few months ago, how will one know what the ASC has done till it is verified by oneself

.

**worrisomebear** · 03-14-2014, 01:43 AM

Re: Karizma/Karizma R

Originally posted by ankit.traveller View Post

AFR setting already adjusted by SC.

Also ensure spark plugs and air filters are clean

**s1d** · 03-14-2014, 02:11 AM

Re: Karizma/Karizma R

[MENTION=51034]ankit.traveller[/MENTION]
If adjusting the afr as mentioned in the earlier posts doesn't solve the issue, do get your valve clearances checked and set to the recommended clearances

**plasmabhai** · 03-14-2014, 01:55 PM

Re: Karizma/Karizma R

[MENTION=11210]ravi@17bhp[/MENTION] Hi Ravi, I had sent a PM message to you. Did you get it? There was some error while sending and you may not have received the message. Kindly confirm! Thanks!

Sorry for OT guys!

**shashank9** · 03-14-2014, 11:39 PM

Re: Karizma/Karizma R

hello guys ..is ravi and psr sir here.??
i had discussed about my karizma earlier that it is having problems when running like jerks,extreme rpm rise, overheating and suddenly going off..now the problem is i took it to hero honda service center they told me to change the carburetor ..i did so it costed me 5k !

now when i am running the bike now it is not delivering much power and when i take a pile on it stops..why is this so .?? i expect air leak..what could be the problem?

**acs1207** · 03-15-2014, 05:44 AM

Re: Karizma/Karizma R

Originally posted by shashank9 View Post

hello guys ..is ravi and psr sir here.??
i had discussed about my karizma earlier that it is having problems when running like jerks,extreme rpm rise, overheating and suddenly going off..now the problem is i took it to hero honda service center they told me to change the carburetor ..i did so it costed me 5k !

now when i am running the bike now it is not delivering much power and when i take a pile on it stops..why is this so .?? i expect air leak..what could be the problem?

I havent seen your earlier post so I am not dissecting much. Have your earlier probs vanished ? The loss in power might be due to the afr position. In new bikes it is set at 2.5 turns . They might have put it that way in ur bike too. Earlier tbe company setting was 3.5 turns. And mebbe it is cause I am an older gen guy...but what does 'take a pile on' mean ? BTW get that old carb from tha ASC. Remember you paid 5k for the new one... There are many parts in it that you can use if the need arise.

Sent from my SM-G7102 using Tapatalk

**ankit.traveller** · 03-15-2014, 09:48 AM

Re: Karizma/Karizma R

Originally posted by worrisomebear View Post

I think its a air screw setting issue, ask them to set it to factory specs..

Originally posted by saravanapriyancv View Post

There is nothing other than AFR setting in your case. You cannot 100% trust them if problem persists. There is DYI threads; follow it and you should be good. It's real simple that with basic carb knowledge a novice can do.

Sent from my GT-N7100 using xBhp Connect mobile app

Originally posted by Divya Sharan View Post

If AFR is set to 3-3.5 turns, then get the following checked:

1. Air lock somewhere in the circuit,
2. Carb slide getting stuck,
3. Carb diaphragm damage.

Originally posted by saravanapriyancv View Post

As far as I know petrol engine's fuel systems are not prone to air lock issues except GDI technology. There is a possibility for vacuum created in our tank but when this happens total fuel supply is interrupted to carb even choke doesn't help in this situation.

Regarding slide stuck up.. He is not having any issues during acceleration. Slide come in to action only when reved. Not when starting with choke or idle. Because carbs have discrete fuel circuit for starting and idling.

Regarding Diaphragm ; Again diaphragm monitors slide movement so this wouldn't be reason too.

Experts correct me if I am wrong.

Thanks.

Sent from my GT-N7100 using xBhp Connect mobile app

Originally posted by AK3D View Post

Forget the ASC, tune the AFR screw yourself. These are symptoms of a lean engine. Did you do a plug reading?
Ride your bike for a few kms. While it is on, ensure your idle setting is at about 1.3-1.5K when hot.
Screw in the AFR screw CLOCKWISE till it stops - don't force it. Count the number of FULL turns (360 degrees) that it went in, and count half or quarter turns, if any. This is to return to factory setting if necessary.
Slowly turn the AFR screw anti-clockwise - 3 full turns and one half turn. Note the idle reading, if it goes higher, bring it to 1.4-1.5K RPM. See how the bike behaves after this.

Originally posted by ravi@17bhp View Post

Take a line tester screwdriver and completely close the AFR screw (clockwise rotation). Then turn the screw anti-clock wise for 3.5 full turns. Ride the bike for around 10 kms, then set the idle rpm at 1400 by adjusting the idle screw. Hope you know where AFR and Idle screws are located. Then observe the results. If the problem still persists, then we will look into other things.

I am certain that there is no issue with carb sliding or diaphragm. Air leak would cause idle issue, especially varying idle.

Originally posted by AK3D View Post

I already asked him to do this a few months ago, how will one know what the ASC has done till it is verified by oneself

.

----consecutive posts auto-merged-----

I already asked him to do this a few months ago, how will one know what the ASC has done till it is verified by oneself

.

Originally posted by worrisomebear View Post

Also ensure spark plugs and air filters are clean

Originally posted by s1d View Post

@ankit.traveller
If adjusting the afr as mentioned in the earlier posts doesn't solve the issue, do get your valve clearances checked and set to the recommended clearances

Thanks a lot guys for your help...problem rectified, I did myself AFR setting as you guys suggested. Now idle RPM is also stable.

----consecutive posts auto-merged-----

Today going to change tires both fr and Rr. Priority is TL. Only option available in TL is MRF Zapper-y and Ralco. Is there any need of changing front to TL? My only concern is tire going flat on tours in the middle of nowhere.

**Divya Sharan** · 03-15-2014, 10:18 AM

Re: Karizma/Karizma R

Originally posted by acs1207 View Post

And mebbe it is cause I am an older gen guy...but what does 'take a pile on' mean ?

Pillion I guess.

Woohooo, tapatalk works on my phone!

**ankit.traveller** · 03-15-2014, 07:29 PM

Re: Karizma/Karizma R

Originally posted by ankit.traveller View Post

Today going to change tires both fr and Rr. Priority is TL. Only option available in TL is MRF Zapper-y and Ralco. Is there any need of changing front to TL? My only concern is tire going flat on tours in the middle of nowhere.

Changed to tubeless MRF Zapper-y 100/90-18 rear and (80/100-18 front)- I was searching for 2.75x18 TL for front but could not find for this size as TL. MRF dealer suggested for 80/100-18 for front saying that it is same size and weight with 2.75 type.

Just had a ride for 100kms on highway, I felt no difference in performance and handling. Got the deal @ Rs.4000 incl fitting , valve body etc.Bought it from MRF exclusive showroom with warrant of 6 years.

**saravanapriyancv** · 03-15-2014, 07:57 PM

Re: Karizma/Karizma R

Originally posted by ankit.traveller View Post

Changed to tubeless MRF Zapper-y 100/90-18 rear and (80/100-18 front)- I was searching for 2.75x18 TL for front but could not find for this size as TL. MRF dealer suggested for 80/100-18 for front saying that it is same size and weight with 2.75 type.

Just had a ride for 100kms on highway, I felt no difference in performance and handling. Got the deal @ Rs.4000 incl fitting , valve body etc.Bought it from MRF exclusive showroom with warrant of 6 years.

80 = 3.14 inch ... fitted in front ??

Who need a therapist when we own a motorcycle

**ankit.traveller** · 03-15-2014, 08:13 PM

Re: Karizma/Karizma R

Originally posted by saravanapriyancv View Post

80 = 3.14 inch ... fitted in front ??

Yup...Its ZMR front size.

**sinnerz2000** · 03-15-2014, 08:50 PM

Re: Karizma/Karizma R

Originally posted by ankit.traveller View Post

Changed to tubeless MRF Zapper-y 100/90-18 rear and (80/100-18 front)- I was searching for 2.75x18 TL for front but could not find for this size as TL. MRF dealer suggested for 80/100-18 for front saying that it is same size and weight with 2.75 type.

Just had a ride for 100kms on highway, I felt no difference in performance and handling. Got the deal @ Rs.4000 incl fitting , valve body etc.Bought it from MRF exclusive showroom with warrant of 6 years.

You could've changed to a Zapper c, the Zapper y is one of the worst grip tyres in the market

Sent from my A7+ using Tapatalk 2

**ankit.traveller** · 03-15-2014, 09:21 PM

Re: Karizma/Karizma R

Originally posted by sinnerz2000 View Post

You could've changed to a Zapper c, the Zapper y is one of the worst grip tyres in the market

Sent from my A7+ using Tapatalk 2

I used Zapper-Y in my Uni for 40k Kms and 5 years, lot of tours,off road, rains etc with no issues.
I am a cautious rider not a peg scrapper.

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