Re: Hero Honda Karizma ZMR

You can move up grades to 15w40 or 20w40 during summers. 10w40 would be better than 10w30, but in heavy traffic, it tends to get coarse.
AX7 is a good oil nonetheless. Just that of late, it has gotten pricey.

If you ride a lot in heavy/slow moving traffic, replace oil in 1500 km intervals.

Re: Hero Honda Karizma ZMR

Sure bro.

But my only concern is that... I read at some forums.. That it's not recommended to deviate more from the recommended oil type.

There were some posts which mentioned that it's better to fiddle around with numbers after "w" but not before it.

Re: Hero Honda Karizma ZMR

Engine oil like any other consumable is something you wont be giving much thought about the more you grow and ride with your motorcycle.

Thumb rule is to not go below on the operational grade i.e the one after the Winter grade i.e 10W30.

You may or may not go above it based on your better judgement wont matter much in the long run anyways, worst case your motor would need an early rebuild by 5~10k km's which is nothing too concerning as the overall mileage of the motor would make that seem insignificant, cause a motorcycle needing a rebuild at 1,00,000km's or one that needs a rebuild at 95,000km's makes a very insignificant financial impact comparing long term ownership.

The key to longevity is simple, change your engine oil as per the thumb rule of maintaining a 2K per 1L sump rule. Now you may hear a lot of marketing about highly engineered lubricants that are made to resist friction to a greater extent, and that is good, but taking into perspective our riding conditions and our if not my riding style is clutch wear residue and blow-by contamination, I prefer to change mine earlier than later.

Anyways go through this thread and you'll get a better idea of how things work!

4/STROKE OIL

Problems with Karizma throttle response and cold start

I have a 2010 Karizma ZMR whose fuel injection has been replaced with a carb. However I am facing the following issues

a) Cold Start problem-- I am able to start the bike only after increasing the RPM screw or pulling the chalk. This not an issue after running.

b) Uneven RPM-- throttle does not come down (it takes a while) as I release the throttle. The RPM is unsteady while idling

I checked the spark plug and it appears my bike is running lean. Is this a problem with the carb? AFR screw adjustment is not solving the issue.
What could be the likely issues in the carb that could be causing this?

Re: Problems with Karizma throttle response and cold start

Maybe you should take out the carb and do a complete cleaning ! What is your airfuel screw ratio?

Re: Problems with Karizma throttle response and cold start

You're running lean mate, do a WD40 test to determine where the air leak is from.

Re: Problems with Karizma throttle response and cold start

Even I am facing similar issue as per point b)...during ride throttle increases automatically while stopping bike and come down automatically or need to release throttle.... any solution please

Re: Problems with Karizma throttle response and cold start

Simple test, blip throttle in idle when the motorcycle is adequately warm, if the RPM hangs then you're running lean which most likely is due to an air leak.

To isolate the leak you'll have to do a WD40 test, find where air leaks in from and replace. Simple.

Re: Problems with Karizma throttle response and cold start

I have no knowledge on WD40 test. Please provide more information in detail.

However; I visit to local bike service center and discussed about the issue, he said that throttle body need to check it seems some setting is changed...

Re: Problems with Karizma throttle response and cold start


Same issue here, but absolutely no solution.

THAT APART.....

Mine is still an FI, and yes, the bike does run lean. This in turn makes the bike too hot. This is turn damages the clutch plates!!!!!

I wonder why the hell I bought this bike. Then again, I can't sell it as mine is WB registered and I stay in Mumbai. The resale value is effectively crap.

I studied a number of ZMRs----HERO HONDA make vs. HERO make. I strongly feel that HERO ECU is tuned to make the bike run lean.

That brings us to the question--what are the low-cost options to re-tune the ECU (not much hope though) or piggy-back a power commander type? Or, can we get hold of any HERO HONDA make ones? Let's BRAINSTORM.

Re: Hero Honda Karizma ZMR

You guys can get the Throttle body cleaned!! This would help!

I kind of faced the similar issue some time back and getting the Throttle body cleaned actually helped!!

The SVC guys only know on how to get customer into replacing the spares! They dont want to clean anything or do any work!

Re: Problems with Karizma throttle response and cold start

Here you go;

Re: Problems with Karizma throttle response and cold start

Thanks for the video...

I am going to get the throttle body and injector cleaned from a local service station this weekend...Mechanic saying that he would clean it and issue will be fixed.

Will update on the same once done..

Re: Problems with Karizma throttle response and cold start

why was FI replaced with carb? this could be the main issue why you are having the problems

Re: Problems with Karizma throttle response and cold start

For those running with carburetor converted ZMRs for RPM not coming down of release of throttle there can be 2 reasons..

1. Check if A and B cable are running without binding...If B cable is stuck this is a typical symptom.

2. Check for proper AFR setting which is 3.5 turns of Fuel screw, anti clock wise... from fully clockwise stop position...do this gently as otherwise the possibility of damage is high.

If AFR is set vary lean also the RPM will hang a 5~10 seconds depending on the setting, after throttle is closed.. The setting mentioned above would be a good starting point..

For ZMR owners running with ECM and MPFi.. the basic tuning is for good FE and most ZMR owners have reported 38~40 Kms per liter in city and 50 on the highway...since it is already lean tuned any further leaning due to Injector block, Dirty Throttle body , blocked fuel filter,and low pressure Fuel Pump will make the engine run very lean and produce a lot of heat and unpredictable engine smoothness. Every MPFi throttle body should cleaned at 25 K Kms interval for a smooth engine with power.