What a great name for a band: Logic Issues. Love it.Quote:
Originally Posted by milton
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What a great name for a band: Logic Issues. Love it.Quote:
Originally Posted by milton
Just checked on Godaddy: the domain name LogicIssues.com is actually available.Quote:
Originally Posted by euphonius
Sorry, Mr Spock, but that is illogical.Quote:
Originally Posted by milton
The posting was about using tap water in your radiator. So the logic went like this:Quote:
Originally Posted by MotoKai
If [Huangpujiang water] is not good enough for Milton's tea, it doesn't belong in your Moto!
So if you are not using coolant, then you should use distilled water, NOT TAP WATER.
:beerbust:
btw: Milton is very discerning when it comes to the water used for his tea!
Just got my JH600 back from Dr. Cui’s last night after leaving it at his shop for 4 days. The problem I had was excessive engine stalling. The problem is not new, but it had just gotten so severe that it stalled at every traffic light.
Prior to sending it to Dr. Cui, a few of us JH600 owners have been systematically swapping out original Jialing parts with genuine Bosch parts. This is partly due to my wishful thinking of doing anything to avoid a major open heart surgery on my bike. Although Jialing adopted Bosch fuel injection and the ECU hardware for our JH600, it cheaped out on all the supporting sensors and the crucial software for the ECU. All Jialing parts surrounding the ECU have genuine Bosch counterparts available, with hopefully better quality. Genuine Bosch parts are not all that expensive, so we have been replacing a few of those parts at the slightest doubt that they may be the fault for anything. So far we have replaced the following:
CPS (Crankshaft Position Sensor) 曲轴位置传感器 ¥130
FPR (Fuel Pump Relay) 油泵继电器 ¥30
TPS (Throttle Position Sensor) 节气门位置传感器 ¥65
I’d say the TPS swap-out is money well spent. My bike is a lot more responsive with Bosch TPS. However, that wholesale swapping effort did not fix the stalling problem. Dr. Cui was suspecting the camshaft valve is at fault all along, for which Motokai sent his in to Dr. Cui’s originally. Hence the sending of my bike to his shop for open heart surgery.
I did not attend the operation (for lack of time and also faint of heart :-)), but the result was quite positive. The excessive stalling is gone and my bike runs better than ever. I am not sure what he had done to my bike. I was told that the camshaft valve needed “adjustment”, with some spring replaced and some part of it also replaced by something he “found” (and subsequently machined to fit). I don’t have any detail and pictures to show, but the outcome is indeed impressive. (Motokai: There is no adjustment made to the idling speed)
BTW, do make sure to change the motor oil and flush the coolant after such a major heart surgery at a Chinese workshop. After the service you can just assume you had a refill of dirty oil and 100% Huangpujiang （黄浦江）water in your cooling system.
Now finally I am ready to go on my 10-day trip planned for next week.
Dear Milton,Quote:
Originally Posted by milton
You realize of course that if you have 100% 黄浦江水 in your radiator, whaht you actually have is 25% urine in your cooler. Think about that next time you order tea in a Shanghai restaurant....
(Actually, very curious now whether urine has coolant/anti-freeze properties.)
Otherwise, great to know Dr Cui has performed another life-saving surgery, and that you are fit for travel come Saturday. I know you were sweating bullets over the stalling, so it's wonderful to have that fixed, even if you're not 100% sure how he did it! (Acupuncture?)
cheers
Huh? Is there some solution out there? The 2011 parts are not a valid solution, btw. Spoke with a 2011 owner who has the same symptoms.Quote:
Originally Posted by euphonius
I've hooked mine up to the diagnostic computer, several times, and there are absolutely no error codes, anywhere. The ECU says everything is running fine.
I'm in the process of wiring in meters to monitor/record sensor activities. My "guess of the day" is the ECU is responding to unexpected input, perhaps from the TPS. It seems the commonality is:
1) Start bike ... runs fine but stalls after about 30 seconds idle. Restart & idles continually without a stall. It seems to be an initial start/idle/stall ... a restart has no idle stall.
2) Stall on deceleration, prior to a downshift.
3) Warm idle stall. Bike runs fine, idles fine at a traffic light (for a while) ... but then stalls while idling after varying lapses of time.
Could even be poor wiring connections. What we need is accurate data about what the ECU is seeing just prior to the stall. It's gotta be adjusting fuel delivery or spark timing for some reason.
There are aftermarket fuel management systems for many bikes - be nice to have one and play around with it.
We, namely a few of us JH600 owners in Shanghai, had similar "guess of the day" and started to swap out Jialing parts for genuine Bosch parts. Those Bosch parts we swapped in so far are not specific to motorcycles, but used commonly by many automobiles, including QQ (not a particularly comforting thought), GM and a few other makes. As those cars don't seem to have stalling problems, or at least I haven't heard of them, the likelihood that they emit unexpected/faulty input is low. My guess is that the ECU is simply badly programmed.Quote:
Originally Posted by Lao Jia Hou
The new Bosch TPS did not in any way affect my stalling problem, although it worked wonders for another JH600 which did not run well with the symptom of bad gas documented by some of us in other threads. On the other hand, what Dr. Cui's did to the camshaft valve did make a world of difference on mine.
BTW, I had tried switching bikes with another JH600-A, the latest model with 2011 parts, and detected no stalling problem at all. All other look and feel about the 2010 and 2011 bikes are about the same though.
Cheers!
Hi Milton - sorry, I didn't fully read your earlier post. You'd already covered the issue.
Can someone post or email me Dr Cui's number? I'd like to replicate what he has done re the camshaft valve &/or crank position sensor. Shipping two bikes to SH seems like overkill.
Does anyone have the genuine Bosch part numbers?
Thanks.
Hi LJH,
Just PM'd you Dr. Cui's number.
Did not get around to jot down the part numbers. I'll see if Master Zhang, who started the whole swap-out thing, has them or not.
Cheers!