JH600 stalling

[bigdamo]

** UPDATE **

Both of my JH600s are stalling, persistently, in all conditions. I own the 2-wheeled "A" and the 3-wheeled "B".

Both are 2010 models.

As it stands, the bikes are simply unsafe to ride, given the ridiculous amount of stalling. They stall everywhere (traffic lights, while shifting up/down, while pulling in the clutch, when slowing down, etc). And although they are usually easy to restart, this is a problem that is completely unacceptable. Imagine leaning through a curve, then hitting your kill switch. Imagine getting ready to pass, shifting down to 4th, and hitting your kill switch. Changing lanes and backing off the throttle - imagine hitting your kill switch. That is exactly how BOTH bikes are behaving.

Very recently, I took the "B" into the Jialing Service Center in Beijing and demanded that the problem be fixed.

EVERYTHING was replaced - new sensors (genuine Bosch); complete throttle body assembly; the decompression valve & cam; the entire ECU unit; new plug & wire; and so on, and so on, and so on. The bike was essentially brand new, again, with presumably updated parts.

Result? It has improved the stalling, but it still stalls. Instead of 2 or 3 stalls per km, my mileage is about 1 stall every 3 kms.

I've spoken to some owners of the new 2011 "A" model and they are experiencing stalls, albeit uncommonly. Interestingly, that was my experience when my 2010 bikes were new. The stalling really started showing up after a few thousand kms.

And, before anyone claims "it's the rider" (typical Chinese logic), it should be noted that I lent my JH600B sidecar to Jim Bryant (owner of jimbo's classic bmw sidecars) for a prolonged test (a few months) ... and his overwhelming comment was ... "this thing stalls way too much. It would certainly be a safety issue."

So, Jialing ... are you listening? Probably not. Jialing, do you care? Most certainly not.

By the way, I had my "B" up for sale (knowing that I was having the entire bike redone to solve the stalling problem), but since it isn't adequately repaired, it is coming off the market. I'm probably going to research putting a Japanese engine in it. Because, aside from this crappy Jialing stalling issue, the JH600s are really fun bikes.

Husqvarna's had/have a problem with there fuel pumps sounds a little similar.Not saying that is the problem but reading up on this and searching the web site might help.There fuel pumps used to sometimes come loose in the tank and cause stalling.

http://www.cafehusky.com/threads/201...r-is-it.19613/

[Lao Jia Hou]

Husqvarna's had/have a problem with there fuel pumps sounds a little similar.Not saying that is the problem but reading up on this and searching the web site might help.There fuel pumps used to sometimes come loose in the tank and cause stalling.

http://www.cafehusky.com/threads/201...r-is-it.19613/

Thanks for the info. It is definitely worthwhile learning about the myriad of possibilities.

One problem facing us JH600'rs is that our bikes are "under warranty" (well, ok, take that at face value). We can't yet rip the things apart. At present, we must rely on the expertise & willingness of Jialing to address this serious issue.

In fairness to the Beijing Service Centre, it appears to have tried everything possible to help me out. But it, as well, is constrained by what options it has.

Jialing (Chongqing) needs to step up to the plate. We'll see what happens in the coming week, or so.

[MotoKai]

Brazil is watching!

[bigdamo]

Thanks for the info. It is definitely worthwhile learning about the myriad of possibilities.

One problem facing us JH600'rs is that our bikes are "under warranty" (well, ok, take that at face value). We can't yet rip the things apart. At present, we must rely on the expertise & willingness of Jialing to address this serious issue.

In fairness to the Beijing Service Centre, it appears to have tried everything possible to help me out. But it, as well, is constrained by what options it has.

Jialing (Chongqing) needs to step up to the plate. We'll see what happens in the coming week, or so.

Has Jialing or any Chinese motorcycle manufacture ever had a product recall not trying to be smart just wondered.

Alot of euro and Jap manufactures are slow if at all to implement a product recall.

[Barry]

Last time I rode with LJH, he definitely wasn't enjoying the JH600. He did more stalls than clicks that day I guess.

I'm actually wondering how the JH600's in Shanghai are holding up when it comes to stalling. Mainly interested in the pre-2010 version compared to 2010 version and later, did things actually improve with the 2010 and later versions?

I had the stall within 30 seconds after starting the engine from cold for while, but now that's gone again. Just the occasional stall, but nothing like LJH is experiencing at the moment.

[euphonius]

Barry, my JH600, the last of the 2009 models, is performing quite similarly to yours. I sometimes get the 30 second stall in the cold engine. And only rarely have stalls during riding. Nothing remotely like what LJH is experiencing.

But when it does happen, it can be dangerous. I had a stall a few weeks ago while rounding a corner coming off a busy ring road. I dropped a gear and popped the clutch to restart it, and damned if this didn't case my rear wheel to skid for just a nanosecond, causing it to slip out from under me just enough to scare the shit out of me.

Others say they don't use the clutch to restart the motor; instead they keep the clutch disengaged and hit the electric starter, the clutch out in an appropriate gear.

Totally agree with LJH that any stalling that's not related to driver error is unacceptable. I'm in California riding my KLR right now, and it idles like a purring cat. Never ever stalls. What a difference! Motorcycle engines simply should not stall of their own accord.

cheers

[TexasAggie]

LJH,

Did you ever try giving Mr Li a call over in Hefei, Anhui Province? He has lots of experience keeping the Military bikes going.

I only experience the stalling once in a great while. Last half dozen short rides have had no issues but I only have a couple thousand kilometers on my bike.

Maybe it is the location and fuel differences. The local Ford and Mazda engine guys who have factories in Nanjing go nuts with different province fuel qualities that actually require different ECU setup depending where the cars go. IT is not widely known for obvious reasons but maybe we suffer same thing with the JH600 depending on the fuel for ECU to be at certain levels that are not maintained.

Anyway, I would call Mr Li and try to get him to come to Beijing if you can. He has been the solution to my problems.