Re: Karizma/Karizma R Ownership Experience

You left out the air filter bro 😀.. In a serious note though, shouldn't it be possible to use Mikuni in karizma apart from different fueling at different throttle positions? Or is it much more complicated than that?

Re: Karizma/Karizma R Ownership Experience

Ha ha ha. First of all, the original carb of the P220F isn't available anymore. The carb is in it's 3rd iteration now. They have been slightly restricting every new batch of carbs ever so slightly for mileage purposes.
Also, I've somehow seen a discrepancy in jet sizing conventions. Main jet of a Keihin carb in ZMA is 125, which is barely equal to 105 or so in Mikuni found in P220.
Now, P220 has a main jet of 112.5 IIRC.
That means in Keihin terms, a compatible jet size of 135. With the default air filter setup, this will make the bike run rich. It will need AFR tuning at regular intervals even with a performance filter which seems like a headache to me. Then, we have the question of TPS. Will it be even compatible?

Re: Karizma/Karizma R Ownership Experience

Never knew they altered carbs in recent models. AFAIK tps is just a signal to cdi regarding throttle positions. It doesn't have any connection with carb fueling. So it should be compatible. But then again, fueling alone is not enough for getting p220 performance. The timing and valve lift must be altered to gain it. Still, a karizma has it's own charm just like p220. I'd prefer it to stay stock instead of modding for performance.

Re: Karizma Carburetor Issue

Dear PSR,

Thank You for your valuable inputs,

I'm now riding the bike with Accelerator cable B removed( Just to confirm it is the culprit!)
After two months of fiddling around with the Carb and other parts related to It.
I finally have an Improvement!!!

The RPM is going down smoothly in between 3K and 2.5K !!
I will replace the cables this weekend!

But I still have to confirm there is no air vacuum leak through the intake manifold/insulator coupling/rubber tubing.

I tried to set Ideling at 2.5K ,3K.3.5K when the engine is warm the RPM is not stable!

When I upshift the gear at 4K RPM, it is rising to 4.2K RPM. I guess this is normal since neutral is engaged or is it an air-vaccum leak issue?

Diaphragm is 2 months old and it has been inspected thoroughly (by me and mechanic).
I will look for any petrol content inside the air cut off valve this weekend.

Yesterday I tried to blocking the air inlet to air filter box and RPM went up 6K from 3K and engine was stalled. I tried it couple of times.
*Is it because the mixture becoming too lean (because of less air entering the filter)?

*Or is it because air is entering the through the leak in intake manifold/ tubing and not enough Air Fuel Mixture because venture principle is not working(since there is less air entering the carb and through the leak)?

I will spray the carb cleaner to carb area as RohIIT suggested and make sure the tubing and intake manifold is intact.

Air-Vacum Leak issue might in my head and not on ZMA !!
Thanks again for your super-awesome support and keeping the spirit alive!

Re: Karizma Carburetor Issue

When you block the air filter inlet, you are reducing the amount of air into the air filter box...If the RPM increases at that time, it is because the Air Fuel ratio is becoming very rich, and when it continues, leads to flooding and inherent engine shut down due to , too rich a mix. ...
Do check for proper Choke cable return , and proper Seating of choke valve inside the Carburetor.. Stuck choke cable/plunger had lead to many such problems in the past.
Good Luck

Re: Karizma/Karizma R Ownership Experience

Afaik tps sends signal to cdi and cdi adjusts firing according to the signal. You can try running the bike with tps disconnected and know how it feels like. I wouldn't recommend it.

Re: Karizma/Karizma R Ownership Experience

You are always welcome bro . Hope you got your answers regarding the bike. Its strange for me know that owner is riding his bike without the air filter.
For peak power of ZMA you must go near 7000 rpm and unfortunately you were not able to do so. Well, you don't need to push the bike's rpm till 7000 rpm, as you will not be able to ride in that rpm range in majority of the days/rides due to conditions like traffic, road conditions, etc. The engine is more powerful that is I am sure, when compared to FZ's engine.

So, don't your risk your life just for the sake of checking the peak power of the bike.

I would suggest to do few more test rides if possible, with proper basic essentials parts on the ZMA before finalizing one. Do wear your helmet.

Hi, I just own a 2007 karizma

I just own a 2007 karizma from my friend who never cared his bike. odo is at 29k, he drives mostly at 60kmph, but feel lazy to put bike in svc, most of the time it run out of engine oil,

at present it running smoothly, but sometimes it run in jerky motion, and feel hard to reach 110.
FE is 48 kmpl on highway and 33kmpl on street.

should i keep this or put in on sale??
by the way i bought it @ 12k

Re: Hi, I just own a 2007 karizma

Hi!

One of my friend faced a similar problem of engine oil level going down regularly in his Bajaj Platina. Also he noted white smoke of the exhaust and also jerks in mid to high rpms. Reason was, for many days, he drove the bike without engine oil, which resulted in worn out piston and damaged piston rings. He was lucky that engine did not got seized. He had to change the piston & piston rings and remove the oil from the cotton material of the silencer. And everthing went well after that.

Coming to your case!

Does it still run out of engine oil after purchasing it and pouring a new oil in the engine? Does it produce any smoke at exhaust?

If yes for any of the question above, reason maybe the piston is worned out or piston rings are gone. If these are the condition, engine oil can seep through between piston head and cylinder and engine oil level will go down.

This is what I can say right now.

Just wait for sometime, as there are more experienced riders here who can put/give more idea/suggestion regarding your case. Let them answer your question.

Re: Karizma Carburetor Issue

Re: Karizma Carburetor Issue

I am interfering here but , i am 100% sure its a case of vacuum leak, find it and fix it .
Use carb spray to locate.
Locations to be seen :

Insulator manifold Intake: I had a minor crack below this and it was not even visible until i flexed the boot.
SAI pipe going to SAI valve : This is most susceptible as its soft rubber which goes bad over time.
Choke seat : 2/5 can fix this properly , so you get the most of the problems from here itself.
Fuel screw o-ring
Idle screw o ring.

Re: Karizma Carburetor Issue

Yes you are taking the logical trouble shooting steps ,and with the change in the carburetor insulator, will know soon on the final fine tuning you may have to do...
Good Luck

Re: Karizma Carburetor Issue

Dear RohIIT,
Thank you for your kind interruption!
I already tried the Carb cleaner technique, below are the symptoms.
RPM is not stable at 3K, It showing h +-0.3 fluctuation at hot engine.
When I decrease the speed of ideal speed, RPM is not coming down in a linear manner.
When I sprayed the Carb Cleaner, there is 0.5K Increase in RPM( it can also be result of fluctuations)

What do you mean by Ideal Screw O ring? Low speed jet O ring?


When I Insert the crab to the Insulator (Intake Mainfold) ,I should insert output of the carb all the way that the latch on the Carb output will rest on the seat (Cut ) on the rubber insulator. Right?
When I got it from the mechanic It was latch was not inserted all the way.?

Re: Karizma Carburetor Issue

The Carburetor should be inserted all the way in like you said..where the raised portion on top side of carb slides into the groove in the insulator ...if it is not inserted all the way then possibility of vacuum leak is there.

Re: Karizma/Karizma R Ownership Experience

Hi Guys,

I own the new karizma R 2014 model and all of my paid services has been completed. I'm going to get my bike services for the first time from an outside mechanic. I'd like some suggestions on what OIL i should start using; I stay in Mumbai and it's summer for next 5 months. I'd also want to know what spark plug will be good.

I went through the threads and found out i have to use the chain cleaner and luber every few days but, still unsure at how much time span.

Please let me know what all things i should consider while getting this service done.

Thank you!