Boxerworks.com

grant81rs wrote:Was that me calling if so sorry bout that !!

Nah, it'd happened not long before your call...I told you about it, remember.

ME109 wrote:Perhaps a $150 oe beancan from Gummikuh will solve the problem.
This 'missing' has plagued you for a while, Steve.
Have you got another beancan? I can send my spare down for you to try?

I'm yet to test ride it...maybe tomorrow evening.
This bout of missing felt different. More severe, more sharp on/off. I have a spare bean can, maybe two, but thanks for the offer.
I have measured the temps both sides and there's a substantial difference. Plugs look the same though.

If the tacho is dropping to zero, it suggests that there is something amiss in the ignition primary circuit. One thing that springs to mind from the symptoms is the possibility that the heat sink grease under the ignition module has dried out and isn't actually sinking any heat...

The ignition module has a little known protective feature. If it starts to overheat, it will switch off to avoid a heat death. As soon as it cools down, it will work just fine. Sudden, unexplained and temporary ignition failure can often be traced to this cause. Try getting some heat sink compound from your local electronics shop, remove the ignition module from it's heat sink, clean the contact faces and add a generous dose of compound then re-assemble.

No guarantees just one more thing to try...

Regards

Rob

Rob, it's good to hear from you again. We've missed you. (No pun intended.)

Ken

Rob Frankham wrote:...
Try getting some heat sink compound from your local electronics shop, remove the ignition module from it's heat sink, clean the contact faces and add a generous dose of compound then re-assemble.

No guarantees just one more thing to try...

Regards

Rob

Rob, I question the "generous dose" of heat sink paste. When assembling a computer the advice is to use a dot the size of a grain of rice between the processor and heat sink. This spreads when clamped to provide the most efficient heat transfer. I've found thick bubbly paste there in a computer that was overheating badly.

And I agree with Ken - it is very good to see you here.

Ran well to work, a little smoother after the cable sync.
Died suddenly on the way home, after 5 or so kms. Running ok, then off suddenly, no cough and splutter then die.
It started after 5 minutes and I rode it home another 10kms. . It died again 50 metres from home.
I'm leaving it alone for an hour or two....
An hour later...no start. All lights are good, battery behaving ok and had been charging at 14v when running.
It's not clack, clack, clacking at all, just turning over on the battery.

Current system is:
edit- 1.5 Ohm HD coil, reasonably new HT leads and NGK plugs. Latest ICU, no heatsink. This is cable tied to the frame just aft the brake splitter. I don't have a bracket for it.
The plug/lead from the ICU to the EI/HES is the 33 year old one.
The EI is the digital advance setup using a HES.

Hot wire the ignition to bypass/assess key ignition and kill switch. Run a wire from battery+ to coil+ I think it is ??

Lights out like that sure isn't fuel.
Also got to try a known good bean can, man.

ME 109 wrote:Hot wire the ignition to bypass/assess key ignition and kill switch. Run a wire from battery+ to coil+ I think it is ??

Lights out like that sure isn't fuel.
Also got to try a known good bean can, man.

Thanks Jeff. Bowls had fuel. Last year, they were dry and new fuel taps seemed to sort that issue.
Tonights task will be to put the old oem bean can back in. Static time it, then a quick look for the Z mark @ 3Krpm.
I have the whole system here, except a newer ICU cable.
So, new (old) bean can and the known good turquoise lettered ICU with a dual 1.5 ohm hd coil.

The forecast for Thursday and Friday is great and I have the days off and a leave pass for Mallacoota with Grant. I'm keen to go.

Update. I tried to restart it again. Same thing, no go, just turning over on the battery.

I essentially did 2 things the other day to troubleshoot the "missing" and poor running. It did run better afterwards.
1. Swapped the HES lead to the other unused one.
2. Added a HD coil 'cause my distractedness lead to me shorting the Dyna coil.

Today it died repeatedly and suddenly. New symptoms from last week.

So I went to it with a view to check those two things.
Easiest first, the coil. The HT leads were too loose in their socket. They snapped back in ok, but weren't a solid fit. It started up

So, on with the 2 oem coils that I have kept for yonks. Started right up.

Further test on the way to work tomorrow. Cross your fingers! If it is still a problem tomorrow, the bean gets swapped over tomorrow night.