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What kind of mobile oil did he pour in? It's highly unlikely that any of these oils are more combustible than fuel itself to start the engine.


One explanation that the engine stopped due to excess heat. YES, it does happen sometimes. And then, when it cooled off, it started again. This "heat" often stops the engine for 10 minutes or so.
And the mechanic putting in mobil oil, it maybe just a lame attempt by him. or probably an attempt to cool off the engine's combustion area...


Catalytic Converter shouldn't get damaged in one such start so relax. However, don't do it much often now.

Thankyou for the reply..I should have waited for 10 min..he uses the mobile that are used to lube chain.
So I was reving around 60-70 km/h and chaning gear at 5k-6k RPM...does engine get overheat too soon.After riding for 3 km the engine stop and I changed the engine oil on 10500km now odo is 11000km.

he poured mobile?...:/

At 11,000 Kms on ODO you are not likely to have problem of heating, unless you have low/ no oil level in engine..So check the oil level and Quality too..If it is black and thick change it ASAP.

Thankyou guys ,I will again give the bike for servicing on my hero honda service center.Now on idle or running..I am hearing a strange sound coming from engine on high rev like 2 metal striking each other,on low rev no sound. This started after fixing the engine by that local guy.

Does the bike struggle to accelerate before switching off?

i think that your engine has ceased but not fully but the piston has grazed the liner of the bore. the mechanic just poured mobile so that he could get some compression. You are stating that the engine is making metallic noises although nothing can be said without actually seeing the bike but i think your engine has partially ceased. See whether the engine is loosing power on getting heated up.

Yes Before I was able to reach 80 with ease now after 60 I can feel that engine is really stretching its limit.

No ,I was raving high at 60 and suddenly engine stop.

I hope it did not damage my engine

So is the partial engine seige bad for long term engine life.How to avoid this type of problem even i routely maintain my bike or this is just luck.

AH!!! finally one more case of this type...

my bike is suffering from this problem since jan 2009. however, i have not been able to pin point the problem. i had been told my my mech that the valves were damaged but replacing them did not exactly solve the issue.

the problem is as below :-
first, the bike loses power and does not accelerate at all, however, it will maintain the rpm if the trottle is not changed.
if you try to accelerate, the bike hesitates, and after a few second of holding throttle at higher point, the bike starts dying and slowly, the engine stops.

after the engine stops, the bike does not start. i see the plug working but the engine does not start.

after around 10-15 mins, the bike starts without any problem and the problem disappears.

this does not happen regularly. last time when this happened was in jan 2010 before that i had faced the problem every 2 months...

please inform if you get the solution to this problem...

You have to either re bore or go for new cylinder kit but first open the head and then see if there are scratches on liner. This happens when the piston expands and grazes the liner. Actually this cannot be known as the engine runs normally if leave it for 30 mins break but once you rip it at 60-70 kph for even 5 mins then it will show power loss.
But you cannot ignore it as it is caused by defective piston which expands beyond tolerable limits when heated.
@sumitpoi and @rockrz both have the same problem and you must see the liner to verify it.
I have faced this as when my HH joy engine was overhauled with new cylinder kit then although the cylinder kit had run for 15,000 km but one day while going to my native place some 120 km away on the way i was maintaining constant 55-60 kph but when i accelerated to about 70 kph suddenly the engine gives hiccup and i immediately knew that the engine has ceased. i stop the bike for 15 mins and after 2-3 kicks the bike started and i maintained a maximum of 50 kph through the whole journey. the next morning when i started to another place from my native place with my mom the bike easily accelerated to 80-85 kph(remember it is a 100 cc engine). but as engine heated up it refused to cross 50 kph. i completed the 500 km trip and as i returned and opened the bore at my mechanic place we were surprised to see that the liner was completely scratched and the material was completely damaged.
Go for re boring from reputed workshop and use Mahle, Goetze or escorts 0.25 size piston because some lots of original pistons were defective and thus caused engine seizure.

I gave the bike to the authorized service centre today.The guy told me most CBZ,hunk and Karizma-R have the same problem but once the engine is started using the same process,the problem does not repeat again.My jaw drop hearing it.But I push him to check the engine properly.

I bought the bike for its look and as I am 6ft it suit me.

I thought HH bikes are almost mentainance free but its not .

my bike has no signs of a scratched liner. i had checked the cylinder bore after the first incident but it had no signs of scratched.

however what puzzles me is that during the pune -goa ride last yea, i was riding at 85-90 kmph for most of the time but still the bike ran without problems. so i doubt that overheating of the block is the chief reason.

actualy the first time when the bike stopped for no reason was on a chily winter night when i was riding at 50 kmph between lonavala and khopoli. at that time, i could find no logical reason for the engine or piston to over heat.

i suspect that the real reason is with the ecu of the bike. cos i had taken the following action since the problem started.
1) valves changed
2) bore inspected for worn out lining, piston rings replaced.
3) oil cooler installed (temporary for egine oil cooling)
4) spark plug and wires changed.

also, the main reason why i am worried is that whenever this happened, first the bike hesitated to accelerate and only when the throttle was pulled to accelerate for a few seconds, the bike died. infact once i did manage to keep the bike going for about 10 mins after which i eventually pulled the accelerator and the bike died.

i feel this problem some sort of vapor lock (common for cars). but dont know how to verify.