Welcome to odisha bro, Wish you a safe journey

Yes friend, you must change it now for better breathing the engine, that results good performance & mileage. the air filter is same that used to be come earlier.

@PSR ... thank you ... sirjee ... the info regd the disc pad is really help full ...
can any one tell me a good mechanic from where i can get after market changes like ... spark plug , air-filter etc ...

one more thing ...how is K&N filter , is it worth installing on instead of stock one ... :??

Yes the Stock plug shows no oil on the plugs, whereas the G power shows reddish brown WET coloring on the plug..The Valve's stem has an oil seal to prevent oil from leaking through into the cylinder when the Valves are moving up and down...if this seal leaks slightly then it can be seen as a spot of oil on the Plug...but your stock plug shows no such deposits..My guess is either the G power is duplicate or the plug is bad...because the G power runs a little hot than stock and burns off deposits and remains clean..hence gives better cold starts and also higher FE...
Stock means what is original ie., OE Original Equipment as what comes with the bike originally.The Air Filter in ZMA is made of Paper element, and is a good filter of dust.The normal practise is to change the Air filter and spark plug at every 10,000 kms just to ensure trouble free performance. People in dusty environment have to do Air Filter change at more frequent intervals.
Mr.Vishal Xbhp id Imjoshee is from mumbai and is a knowledgeable gentleman who can help..so send a PM to him regarding your requirement . K&N is not good for the Engine and Carburetor in the long run and both will go through accelerated wear, since K&N allows more dust to flow through, and also clogs faster than stock air filter

The idle rpm in my zma never remains constant, it goes below 1000 and switches off sometimes. If i re adjust the rpm to 14000 or 15000 rpm, it goes beyond 20000 automatically and i have to get it back to normal. why doesn't it remain constant.
The bike is 5yrs old(2007 zma r) and has done 37000 on the odo, i have an ngk iridium plug running for the past 20000 kms(would that be an issue). The air filter is new. The bike has no issues with mileage and pickup.

Check the plug Gap with either Feeler Gauge or Vernier...The recommended gap is 0.9mm. After 20,000 kms the gap will be more...to set it, gently tap on the GROUND electrode till you get it right.
After this if you still have problems, set your AFR to 3~3.5 turns as required.

Thank you sir, will do that first and post the result.

That is some heavy number you have !!! Should be one zero less for all numbers .
@psr - When idle rpm varies shouldn't air intake be suspect too ?

I got a rear Michelin from there in August.

Sir, It is the second time I got a faulty G-Power, I think.
The first one has no name printed & the second one has original name printed with no work
Anyway I am happy learning things from you, which will help me in future.
What should I do with this plug ?? should I give it another chance ?

I had the same issue with my 4 year old hunk running in 60k kms. the problem was solved after cleaning the carburetor & replacing my choke cable as it was too old. hope this helps you.

It is very unlikely that NGK would sell a faulty plug , most probably your market is flooded with fakes . Just sometime back they seized a whole shipload of spurious spark-plugs coming in from china marked of various brands .
IC engines need 4 things to work - fuel , air , compression and a spark .. and those four better be sound for it to work nicely . IMHO best bet for you would be to go to a Hero ASC / Hero authorised parts seller in Bhubneswar and buy the default NGK plug and fit it right now . The standard NGK plug is cheap and lasts really long without any problems at all - so why take a chance on this vital aspect .

First of all the spark gap must be set correct since the owner had been using the plug for 20,000 Kms without attending to it. A wider gap gives out bigger spark if the coil is capable of it, but will vary due to the larger gap.So without first correcting it,further adjustments will be void..once it is done and if the RPM still varies then further trouble shooting is warranted.

I think you are getting bad plugs most probably fake plugs. Buy products from authorised sellers and not from the normal spares shop. Knowing that the plug may be giving you problems, do not re-fit the same again, and use the normal plug till you find an authorised seller and source it from him.

You had asked for help from me and i had asked you to wait as i know 90% of NGK nd MICO are fakes. For your information let me tell you that Bhubaneswar has become the hub house of duplicate spares. The belt from kalpana square to rasulgarh which houses all spares, you can get all spares but 90% are duplicate.
I had asked my retailer friend to source the g-power from authorized distributor. If you can wait i will give original g-power.
And this is for all here:-
Duplicate spares are a plenty here. So i advise you to tread with caution. You will be surprised to know that duplicate spares are packed in OE packing and you cannot distinguish from OE spares. MEchanics knowingly fit those as they get huge commission from the spares shop.
Let me tell you about my friend.
He is a retailer of hero,bajaj and tvs spares. People come for spares daily of hero bikes as my friend is a quite big retailer. All people haggle here for discount as my friend doesn't give discount as OE spares have less margin. They say that in cuttack road(the stretch between rasulgarh and kalpana) shops give discounts but they fail to see that they are duplicate in oe packing.
For example the handle bar grommets(rubber in between handle and t-plate mounts) come in OE packings in sets of 50. SO when a customer comes they argue that in cuttack road they give 4 pieces in oe packing and why not you. But they fail to understand that the product that they bought in OE packing is fake as hero never makes 4 pieces in single packing.

And the most surprising thing is that the fakes in OE packing are priced higher than OE spares and thus the people think that my friend is keeping fake.
Eg- the original o-ring kit for splendor cost Rs.156 but fake in OE packing cost Rs.219.

So i request all members to keep an eye and next i will post photos of OE packing and fake packing and how to distinguish between the two.
@jpzma- If you want OE g-power and spares then let me know i will show you my friends shop and you can get spares from him and also plugs and oil. For your information let me tell you that castrol,elf, and hero honda 4t plus are most faked in bhubaneswar markets. If you want oil i will introduce you to my friend and he stocks all oil:-
Castrol- active,power-1
ELF, BOSCH
SHELL- AX3, AX5, AX7, ultra
MOTUL- 3000,3100,5100,7100,300v
All OE hero and bajaj spares.
And also you can get diamond, rolon and original DID chain sprockets and timing chains.

ya you are right, it was a mistake.

Thank you dear, I will follow your words.
Actually i thought G-Power can give me better performance, so i took that chance.
Now i installed my original stock plug & everything is ok.

Thank you sir, I'll take care of it.
you are right my friend. most cuttack road dealers are really fake.
But, i ordered that plug from indore due to non-availability.
I would be happy to step in your friends shop for engine oils & necessary spares.
Can you mail me at [email protected]
Anyway thank you very much for those valuable information

Incase it also happens while riding i.e. the rpm is not dropping but raising and then dropping during gear shifts, please check your inlet manifold rubbers and other rubbers on the carb. If no problem found there, have your carb serviced completely.


Statuary Warning:If the last option also does not help, please order a carb at your nearest authorized service center.