Re: Karizma/Karizma R

He messed up with silencer and valve assembly air suction as well. He pumped engine oil into the silencer.

Check the PIC that is valve assembly air suction also called as pollution suction. He drilled threading and inserted that screw into it. You see that black pipe it heads to the top of the engine head. He pulled that black pipe and inserted the below seen screw and put that black pipe back again. Vehicle use to jerk a lot like no fuel. He also messed with carb. After lot of arguments and complaints they solved it again. I got rid that screw and it was okay.

I had to change my zma silencer at ODO 3000 because as I said he pumped engine oil and messed with catalyst converter as a result the sound has changed. I got a replacement and he again pumped the oil after fitting the new silencer. It was like full of blue smoke coming out.

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Re: Karizma/Karizma R

I am speaking about that Black pipe at top let corner in the PIC with an aluminium clip. I think you can notice it.

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Re: Karizma/Karizma R

Yes I mean backfire. I have to check about silencer fitting also..

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Re: Karizma/Karizma R

Suresh.....wrong fitting of silencer pipe leading to leak, damage to SAI unit which you had posted will all lead to misfire or normally termed as 'pop' in the exhaust.The sai unit has a diaphragm actuated by the engine vacuum. The actuating valve inside opens the orifice inside to connect clean air from Air Box to the exhaust to add air and thus reduce pollution level...If the Valve is malfunctioning then also this will happen.....
Pouring oil into the exhaust of 4 stroke engine is unheard of the mech seems to be clueless about many basic things concerning the engine...better to change than suffer further damage...

Re: Karizma/Karizma R

Thank you psr sir. Hero workshop agreed to replace both the silencer and sai unit. They said they placed an order, but it is more than 2 months from that date. So far I heard nothing from their side. I checked couple of times with the workshop manager. He is saying because of plant shifting stocks are not available.

Anyways, today I will check the silencer fitting.

Once again thank you.

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Re: Karizma/Karizma R

Even my ZMA is making this sound. but, I'm hearing this sound from few days of my bike purchase. The sound is like "pock" once during sudden deacceleration. My bike is new. Is this something i should get it checked?

Re: Karizma/Karizma R

Got the NGK G power. rode 75 kms after changing the plug. improvement is readily felt in the rpm range 3 to 7. the bike surges ahead with urgency. earlier when i used to ride at 40 in 5 th gear and then accelerate.the engine lugs a bit. now with G power this is vansihed. the acceleration also has improved. the bike moves as if some one is pushing it from behind and also changed the brake shoes. this is my first attempt to change it myself and it took a whole 1 hour. the wheel rubber falls down when i put the wheel. this remined a commedy where vadivel tries to unfold a mat and sleep on it and it would curl back again.

psr I got a idea of how does the resistance things work in the spark plug. i approached a few shops to get the resistance free plug cap. none of them had any idea about it. How do I remove the resistance from the stock plug cap? also please explain me will be there a increase in mileage/acceleration after removing the resistance?

The wierd sound that i said earlier comes from the silence cover. found it today.

regarding the brake pad bachoo motors replied me that the pad is not in stock..he said he will be source by monday and mail me and also was also able to get hold of a guy in KTM. he said the pads would be sourced by next Wednesday. Would go with the one which I get first.

Re: Karizma/Karizma R

Hey Guys!

Changed the horn and the left switch assembly as well however the problem is not resolved.

Wiring gone?

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Re: Karizma/Karizma R

If resistor free cap is not available, then try the Pulsar cap on which it will be written 1K...Reducing the resister , helps in good flow of electricity, thus will make the Spark more powerful. What you will notice is slight improvement in throttle response ...

Re: Karizma/Karizma R

used pulsar's spark plug cap, couldn't make much difference so switched back. NGK g power really works and it's worth a upgrade. first time FE crossed 42 inside city(purely city riding) speeds below 100 with the bit of liberal throttle

Re: Karizma/Karizma R

[MENTION=32286]psr[/MENTION] sir, one thing I was wondering about: why the manufacturers use resisters deliberately in sparkplug cables, caps? What they want to achieve by that?

Soulfuel @ 9830072897

Re: Karizma/Karizma R

Used to suppress EM noise.
Em from plugs is enough to fry electronics.

Re: Karizma/Karizma R

In the good old days of Carburetors and no electronic assist for any operation, the Spark plug cable used to be either copper or stainless steel wire with nill resistance. When radios were fitted in cars, the spark noise could be heard clearly in the audio, so filters in power supply were introduced in the Radios...then the thought came, why not control it at the source itself ? When ECU and other Electronic circuits started getting into vehicles, suppression of the Ignition EM radiation became relevant and necessary...The EM radiation caused malfunction of the circuitry so resistive Plug Caps were introduced....later resistive plug wires as OE fitting was done....when manufacturers of Plugs found that CDI ignition etches the Electrode by their intensity, a resistor in plug was introduced...
With resisters in three places ie., cable, plug cap, and the plug itself, the spark energy became poor and misfires became common.. So manufacturers did away with one of the resister in their design......still 2 resisters do reduce the spark energy and so one was the necessary design ....the resister can be either in cable or cap or in spark plug to kill EM radiation,...but not in more than one device,which will reduce spark energy.....and failure of parts....esp some plug caps and mostly champion plugs

Re: Karizma/Karizma R

When manufacturers started using multiple resistance in spark circuit , they took that into account and increased ign coil voltage corresponding to new circuit resistance.
Few years back ign coil were making some 12k volts and now even cheap ones make 40k volts.
Removing resistance out of circuit can help improve the spark colour , and may help little bit in performance as well. But keep in mind , lower resistance of circuit also permits higher current to flow through entire circuit.
Ign coil and ecu has some very fine and thin wires that do not handle increased current well and will blow out. Heat generated in an electronic circuit is I2R. It increase with square of current. Even a minor increase of current can fry various things in a modern vehicle.

Re: Karizma/Karizma R

Wonderful information.
Thanks.

Soulfuel @ 9830072897