JH600 stalling

[998S]

Hi Eric,
maybe you could check up my 600A which is built in may 2011. latest ECU. Most important, never stall.
Then you can compare this one with Milton's. I don't know if it helps.

Hi Fons,

Yes sure, will come back on that offer for sure, thx!

Eric

[Lao Jia Hou]

Lao Jia Hou + Milton, your postboxes are full ... cant reach you with copy of a PM...

Yeah, sorry ... now fixed (I downloaded/deleted my bike-porn stash)

[Barry]

Anyone willing to sacrifice his JH600 like this!

[998S]

like this!

Idiots ... but as you are in Beijing already :-))

[chinabiker]

Anyone willing to sacrifice his JH600 like this!

This is what happens when brain is replaced by money

[ZMC888]

hey fella,
you better not ride a made-in-china bike on the chinese road. so you can avoid all these problems.

Originally Posted by ZMC888
Euph, yes your bike was indeed faultless during torrential rain.

Could be a bad batch of leads, coils, EFI, sensor reading wrong, could be EFI itself, a question for a real engineer. Needs a BMW or Bosch engineer from Germany or Austria, I'm sure they'd find the problem in five minutes with the correct apparatus.

If it was my bike I'd try:

1. Make sure I had a Japanese manufactured NGK spark plug of the correct rating and gap measurement.
2. Buy a new internationally known brand battery and long charged it properly before I used it.
3. Change the lead to an NGK.
4. Try running Shell 97 octane.
5. Try changing the fuel filter if possible.
6. Try chevron techron fuel system cleaner or BG 44K
7. Try rewiring electrical system better
8. Try an aftermarket air filter and muffler to see if increased air flow actually helps.

after that I'm stumped, and would clearly be a Jialing company issue.

I don't understand? I already do ride a Chinese bike on a Chinese road! Actually mine has less problems because it is based on 40 year old Honda technology. It's when you get Chinese companies trying to do clever stuff like EFI and liquid cooling that you run into problems. Although the next bike will probably be a Suzuki GW250.

Screw copycat, greedy, defensive, incompetent, abysmal customer service Chinese companies, never again. Nationalistic Chinese bikers hate these bikes too, and that says something! The government gives them the entire market, and yet they still can't get it right, except on all but the smallest capacity and most dated technology.

[fons]

well, that's what i mean you shouldn't ride any made-in-china bike for your own safety issue.
if we all stop buying these bikes, then possibly they will change a little bit their mentality.
but actually chinese automobile manufacturer can easily catch up the latest tech by merge and acquisition. check out those latest actions. So hen you have fat cash on your hands, nothing is too far. Of course you have to play smartly.

I don't understand? I already do ride a Chinese bike on a Chinese road! Actually mine has less problems because it is based on 40 year old Honda technology. It's when you get Chinese companies trying to do clever stuff like EFI and liquid cooling that you run into problems. Although the next bike will probably be a Suzuki GW250.

Screw copycat, greedy, defensive, incompetent, abysmal customer service Chinese companies, never again. Nationalistic Chinese bikers hate these bikes too, and that says something! The government gives them the entire market, and yet they still can't get it right, except on all but the smallest capacity and most dated technology.

[ZMC888]

well, that's what i mean you shouldn't ride any made-in-china bike for your own safety issue.
if we all stop buying these bikes, then possibly they will change a little bit their mentality.
but actually chinese automobile manufacturer can easily catch up the latest tech by merge and acquisition. check out those latest actions. So hen you have fat cash on your hands, nothing is too far. Of course you have to play smartly.

Oh yeah, so true. I worry that they'll never catch up in terms of bikes, only cars, only manufacturing. They'll buy-out all these struggling foreign brands that will become their design car houses and logo suppliers, in this they'll probably succeed just because of their obsessive love of cars. I wonder is it possible to succeed in the bike industry if you don't love bikes and only money? I worry long term they'll fail when the RMB hits it's true value and their exports aren't very competitively priced or very good, then they'll ban all internal combustion bikes when they throw their pacifier out the stroller.

[td_ref]

Screw copycat, greedy, defensive, incompetent, abysmal customer service Chinese companies, never again. Nationalistic Chinese bikers hate these bikes too, and that says something! The government gives them the entire market, and yet they still can't get it right, except on all but the smallest capacity and most dated technology.

probably because of same experience, I felt high when you said bad words. In fact I learnt a new word - Sinophobia, oops, I said the word, gone too far. But a little wiki says it dated long time ago, even US president say something similar. There is also a book entirely criticize ugly Chinese culture. OK, no need to fuel the hatred, full stop.

[998S]

Well, if you allow me to go back to topic?

I follow this thread for 5 weeks now, and got more involved in the last 2 weeks.
From my experience with EFI, from what I have seen, from the observations and suggestions by others, plus a bit of actual measuring, I remain with my conclusion that the final cause of the stalls is a lean mixture. This was and is confirmed by measuring the exhaust of 2 bikes.

Of course the lean mixture is only at the end of the total process, and is caused by one or various reasons.
I still suspect that the mapping is set on the leans side to pass the regulations.
However, the ECU is only a part of the system, and in order to be sure that the ECU is the culprit, you must be sure that ALL OTHER equipment (sensors, connections, electric cables, power supply, etc) are fully functioning, calibrated as they need to be, clean and without any other problem.

What I see happening in the last week, is that not only the factory, but also some of you are loosing their patients.
I can understand that it all took too long, that the factory service is non existing, that that that.

But what I miss (and what I surely had done in the case I had a Jialing) is to go back to the basics first.
Clean everything, set every sensor, every switch, everything, according the manual factory settings.
This way, and only this way, you set a proper base, and allow the rest of the testing and trying to be successful.

Instead I see some people rushing from service shop to service shop.
I see service engineers without knowledge, without interest and without passion changing things, exchanging things, re-setting things, disconnection things.
The only result from all that is, that more and more is out of whack, and that any next "repair" is more a lucky shot then anything else.
We can not prevent the factory from acting erratic, but I think some of you might need to take a small step backwards, a deep breath and then just show some patients.

If I had a Jialing, I should have stripped it to the bottom already, just to be sure that the basics are correct.
I should then at least be confident that any further step by step approach was solely based upon the single item changed.
As said, only this way of working makes conclusions valid.

The above is not in any way meant offensive.
I can understand that I am perhaps lucky that I don't have a Jialing, and I can understand that some owners reached the limit. To each its own, no problem at that.
But I am perhaps also the person who can take a bit more distance by not having a bike, and by looking at it from a more technical point of view.

Guys, the winter is coming, give it 4 more months, take a deep breath, go back to the basics, and give it an other try.
I guess you all have learned more about EFI in the last 4 weeks then in your life time before .... imagine where we might be in an other 4 weeks ....
Well I will be in the tropics by then, but that is an other story haha ...

Eric