Re: Hero Honda Karizma ZMR

Some pics from a far distance would be good. Also, if you can post pics with different angles will be great too. Also, some pics with headlights on.

Re: Hero Honda Karizma ZMR

Guys. There's this strange problem in my bike. It cropped up after water went into my fuel tank due to a blocked drain hole.. I got the service center to clean my fuel tank and they claimed they removed 200 ml of water, and serviced the injectors and the fuel pump. But am not very convinced.

The problem is this.. When I try to keep the throttle constant at 4krpm at any given gear, the rpm keeps fluctuating between 4k and 4.2k.. When this happens, its as though the bike is out of fuel, similar to how a carb-ed bike behaves when it hits reserve, this is the closest analogy I can relate the situation to..

The air filter is 700kms new..
Is there a problem with the injectors/fuel pump/fuel filter?

Edit- The accelerator cable is still stock. Do I have to replace that?

Need expert opinion.. [MENTION=32286]psr[/MENTION] sir [MENTION=28527]sibun[/MENTION] [MENTION=43108]shoeb2015[/MENTION] [MENTION=41586]Divya Sharan[/MENTION] [MENTION=27501]rreneav1987[/MENTION] [MENTION=53321]abhi7013[/MENTION]

Re: Hero Honda Karizma ZMR


You don't have to replace accelerator cable. The fuel pump (I don't know what you've been told) cannot be serviced or repaired. Once gone its gone. So trust me if fuel pump had problems before then the svc guys made it worse. Your lagging issue has been faced by many ktm duke riders including me. It happens because the fuel pump is unable to maintain constant pressure and this will cause the bike to also loose top end performance though it will not be easily felt but trust me your bike is loosing top end. The fuel pump can be ruined by adulterated fuel, constant low fuel usage, water in the fuel, and physical damage. Replace the pump and bike'll be back to normal.

Re: Hero Honda Karizma ZMR

Are you sure all of the water was removed from tank? Also, since water is denser, it may have settled down at the bottom of fuel pump or filter.
There's a filter between the tank and the fuel pump. That filter has to be patiently cleaned with petrol itself. Also, be there in front when they are doing it. As u have to remove the tank in order to reach the filter, try again cleaning the fuel pump. The injectors are cleaned at places where they service diesel pumps.
Try checking the spark plug too. These are the only possible elements i can think of.

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Re: Hero Honda Karizma ZMR

All I was told was that they "serviced" the injectors and the pump. I have to fight my way with the ASC to replace a fuel pump now, they are least bothered 
I've been filling only at shell bunks 95% of the time, been using system g since for the past ~10000 of the 11700 kms on odo.. And I always refuel once it hits reserve. So water in the tank is the culprit.

I have a few questions..
1. Does this happen only at a certain rpm for you?
2. Did you replace your fuel pump? Under warranty?
3. Why is it a common problem in KTM bikes, was it like a factory defect?

Thanks

They removed the petrol+water mixture and poured in fresh fuel for 200 bucks, and gave me a bill.

I have my service due in 300 kms. Will ask them to service the fuel filter and injectors once again.

Will post a pic of the spark plug tomo as its dark now.

Thanks

Re: Hero Honda Karizma ZMR


Yeah it happens between 4-5k rpm and at top end. But since ktm riders specially 390 riders can't reach full speed if any gear in the city the top end bit is not apparent until we go on a highway.
Ktm bikes have small tanks fitted with literally oversized fuel pumps (pic on one of the duke threads) and that too they are fitted directly underneath the fuel filler hole of the tank. So these idiot bunk walas in a bid to rest the fuel nozzle on the tank shove the nozzle way deep into the hole and deploy fuel at full pressure directly on the fuel pump which causes damage. The new bikes though are coming with metal restraints on the tank hole to prevent the nozzle from going in.
Yes I did replace it under warranty otherwise it cost about 5k INR for a 390 fuel pump.
The injector and throttle body remain unaffected by water so only way to damage it is to actually tinker with it which unfortunately for you the svc retards have already done. I hope it isn't so for you but expect a big bill if your bike isn't under warranty and next time stay next to your bike no matter how much those svc bastards protest. Its your right, they can't deny you.

Re: Hero Honda Karizma ZMR

The onlt reason foe that is fuel tank has water mixed.. in other words, they have not cleaned the tank properly.. get them to remove the fuel pump and make sure that any fuel left in there is removed.. i.e get the fuel pump cleaned..

The fuel filter is located between the tank and the fuel pump. It is infact the connecting point of the fuel tube from tank to pump.. if possible, get them to clean it up..

Regarding the injector, trust me. They havent cleaned it. They dont have the equipment to clean an injector..

In other words, "Kaathu la poo suthurange"

It isnt easy to access the fuel injector and it is very very sensitive so they will not take risk to even touch that part..

Regarding the rpm issue. You might be running lean.. get the pic of your spark plug..

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Re: Hero Honda Karizma ZMR

Thats a bit weird, Are the pumps usually placed at the bottom of the fuel tank?? Anyway glad to hear you got it replaced under warranty and +1 on the fuel filler cap.
My bike is under warranty, yes. All these svcs here in chennai don't care as they get a lot of bikes everyday. So very less attention is given to bigger bikes.

Wokay machi I'll make sure they clean the pump and the fuel filter and the injectors if possible under my inspection. Otherwise replacement only. Spark plug pic tomo!

Cheers

Re: Hero Honda Karizma ZMR

Good Evening Guys,

I am using the Shell AX7 engine oil. Is adding 3M oil additive necessary?

Thanks!

Re: Hero Honda Karizma ZMR


Yes the pumps are placed or rather bolted onto the bottom of the fuel tank in such a way as to always be partially submerged in petrol for maximum suction.
Don't mess with the throttle body and injectors or you'll be replacing them. Trust me on that.

Re: Hero Honda Karizma ZMR

But you mentioned its near the filler hole, hence I asked.

Re: Hero Honda Karizma ZMR


No directly underneath it bolted to the base of the tank. Here's a picture.....

The flat plate being fixed is the fuel pump base.

Re: Hero Honda Karizma ZMR

Well, in case of zmr, i feel they are easily serviceable. Twice I've had my fuel pump opened and cleaned. Injector and fuel filter are also accessible once the tank is removed and I've seen many zmrs being serviced that way, one of them being [MENTION=41586]Divya Sharan[/MENTION]. I guess that's a positive for us.
And nice to hear that you saved a lot by replacing under warranty! These svc idiots are adamant when it comes to warranty.

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Re: Hero Honda Karizma ZMR

What is that small thing they are handling?? Is that a tank?? ZMRs fuel pump are not partially submerged under the tank. They are placed well outside the tank.

I have few pics of the ZMRs fuel injector being serviced.













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Re: Hero Honda Karizma ZMR

In ZMR the fuel pump is outside the Petrol Tank...in fact it is close to the right side..ie., gear shifter side...it is close to the side shield and you can see it as a round cylindrical unit with Tubes from Petrol tank and filter connected to it...