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**Aryan** · 02-07-2010, 11:19 PM

Query Approved.

@Vineeth: Please avoid using SMS lingo while posting on xBhp. We do not approve of such language, here.

**iamvik** · 02-07-2010, 11:39 PM

Your problem sounds like a sticky throttle. You said the carburettor has already been cleaned. Have you checked the throttle cable and choke cable for smooth operation?

The karizma has a CV carb. Get the diaphragm of the throttle checked for damage and correct sealing. If I remember correctly, the carburettor also has an accelerator pump device. Check it's diaphragm too for leakage.

Let us know if this helps.

**vineeth aredath** · 02-08-2010, 03:00 PM

Originally posted by iamvik View Post

Your problem sounds like a sticky throttle. You said the carburettor has already been cleaned. Have you checked the throttle cable and choke cable for smooth operation?

The karizma has a CV carburettor. Get the diaphragm of the throttle checked for damage and correct sealing. If I remember correctly, the carburettor also has an accelerator pump device. Check it's diaphragm too for leakage.

Let us know if this helps.

hi iamvik thank you for your valuable information brother

Brother i changed my throttle cable recently and it is smooth enough But i haven't did anything with my choke. Few days back i approached the service center with the same problem and this time they told me to change the insulator since the part was not available i couldn't change it. Then i would like to know is there any problem with my air screw Because one year before i had an issue where the screw got stuck in carburettor and service center guys gave it to some local shop to remove the screw this happened long back and everything was fine after that.
thank you in advance

**kurtrules** · 02-08-2010, 03:46 PM

Looks to be a carb tuning issue. Get it tuned properly. When you got the carb cleaned, did you get the carb slide (air/fuel mixture control) inspected? Also check the idle RPM setting.

**jd666** · 02-08-2010, 03:50 PM

im guessing the slide is not moving smoothly.. get your carb opened, and opened completely... and cleaned and serviced...

**vineeth aredath** · 02-14-2010, 11:07 PM

Originally posted by iamvik View Post

Your problem sounds like a sticky throttle. You said the carburettor has already been cleaned. Have you checked the throttle cable and choke cable for smooth operation?

The karizma has a CV carb. Get the diaphragm of the throttle checked for damage and correct sealing. If I remember correctly, the carburettor also has an accelerator pump device. Check it's diaphragm too for leakage.

Let us know if this helps.

hi Brother,
As you suggested i went to HH svc(Kannur) and enquired about checking diaphragm of the throttle for damage and correct sealing, But they said its not possible for them to check the diaphragm for damage and they assured me that there is no problem with its sealing.. THEY even told that there is no replacement for a damaged diaphragm, once its damaged then there is no other way other than changing the whole carb

am really depressed now plz give some solution..... thank you in advance.....

**vineeth aredath** · 02-14-2010, 11:15 PM

Originally posted by kurtrules View Post

Looks to be a carb tuning issue. Get it tuned properly. When you got the carb cleaned, did you get the carb slide (air/fuel mixture control) inspected? Also check the idle RPM setting.

thank you brother for your valuable information,
yes i cleaned the carb last month and i don't know anything much. I had seen those SVC guys removing the carb and cleaning thats all..... they even checked the air screw and was fine.....

**fohimuddin** · 02-14-2010, 11:30 PM

dude the problem is with the mixture screw.i too had the same problem with my cbz extreme,but the service center could not solve it.one local mech solved the problem by tuning it correctly.now its fine.also double check that there is no leakage in the hose pipe running from you crab to the head,sometimes it also matters.

**iamvik** · 02-15-2010, 11:58 AM

Originally posted by vineeth areth View Post

hi Brother,
As you suggested i went to HH svc(Kannur) and enquired about checking diaphragm of the throttle for damage and correct sealing, But they said its not possible for them to check the diaphragm for damage and they assured me that there is no problem with its sealing.. THEY even told that there is no replacement for a damaged diaphragm, once its damaged then there is no other way other than changing the whole carb

am really depressed now plz give some solution..... thank you in advance.....

The mechanics are contradicting themselves. If they can't check the integrity of the diaphragm then how can they say that there's no problem? Also the diaphragm can most certainly be replaced. It is a rubber component and is not designed to last indefinitely. I think the service station is just trying to fob you off since investigating a carburettor problem takes time and effort.

I suggest you enquire on xbhp about good, reliable independent mechanics in TVM and go visit one of them. In my experience, most dealer mechanics are good enough only to follow the instructions in the service manual and nothing more.

The problems you have described do not seem to be caused by the air screw. The air screw only controls the mixture at idle and at close to idle speeds.

**iamvik** · 02-15-2010, 12:02 PM

Have you had the rubber inlet manifold checked for leaks? It is the rubber tube connecting the cylinder head to the the carburettor. If it is leaking, air will be sucked in through the cracks. This could very well be the cause of all your problems. If in doubt, just change it and let us know the results.

**vineeth aredath** · 02-15-2010, 04:13 PM

Originally posted by iamvik View Post

The mechanics are contradicting themselves. If they can't check the integrity of the diaphragm then how can they say that there's no problem? Also the diaphragm can most certainly be replaced. It is a rubber component and is not designed to last indefinitely. I think the service station is just trying to fob you off since investigating a carburettor problem takes time and effort.

I suggest you enquire on xbhp about good, reliable independent mechanics in TVM and go visit one of them. In my experience, most dealer mechanics are good enough only to follow the instructions in the service manual and nothing more.

The problems you have described do not seem to be caused by the air screw. The air screw only controls the mixture at idle and at close to idle speeds.

thank you for the information brother
Riding all the way to TVM is a bit difficult for me But i will be very happy if you point out some trusted mech in Bangalore. since i know the place and at any time i can come down to ban......thank you in advance

**iamvik** · 02-15-2010, 04:25 PM

Originally posted by vineeth areth View Post

thank you for the information brother
Riding all the way to TVM is a bit difficult for me But i will be very happy if you point out some trusted mech in Bangalore. since i know the place and at any time i can come down to ban......thank you in advance

If you can do some DIY repairs, try to remove the rubber manifold and check for cracks inside and outside. Squeeze the manifold a bit if required. When you replace it, tighten the clamps properly. If you can do this much on your own, you should be able to replace the manifold with a new one, making sure it's a genuine HH part.

Sorry, I mistook your location to be TVM. You should post a msg on the Kerala thread or karizma thread and ask for recommendations on mechanics near to you. As for Blr, I recently returned to Blr after a few years away so I don't know any good mechs here. You could also ask this on the karizma thread.

good luck!

**vineeth aredath** · 02-15-2010, 04:36 PM

Originally posted by iamvik View Post

If you can do some DIY repairs, try to remove the rubber manifold and check for cracks inside and outside. Squeeze the manifold a bit if required. When you replace it, tighten the clamps properly. If you can do this much on your own, you should be able to replace the manifold with a new one, making sure it's a genuine HH part.

Sorry, I mistook your location to be TVM. You should post a msg on the Kerala thread or karizma thread and ask for recommendations on mechanics near to you. As for Blr, I recently returned to Blr after a few years away so I don't know any good mechs here. You could also ask this on the karizma thread.

good luck!

thanx brother for your valuable replays, i will surely check the pipe, i hope the problem is with pipe and if so i wil surely do arrangement to change it once again thanking you a lot........

**vineeth aredath** · 02-18-2010, 01:15 PM

2 days back i met one mechanic and did a complete assessment of bike, we cleaned the carb, did all checkups and even checked timing chain. After all these he just came in to the conclusion that there is some change in tps values since he was not having any instruments(i don't know the name) he couldn't reset the TPS value but he strongly recommended me to check and reset TPS value, he told that there is no such problem with the diaphragm an air screw and 99% he was sure that the problem is with TPS values,

He explained that Bike produces a lot of backfire and that's the reason for sudden stop of engine at lower RPM.

From past one year am listening to these kind of different comments from mechanics and now really don't know weather his findings are correct or not so i need you guys to shed some light on this
Please help

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