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Discussion Starter #1
OK. Here we go:

I know that there are not many Uralists on here, but there are plenty of mechanically mind folk, and a bike is a bike after all (unless it's a steaming pile of **** parked in my space)

Bike: 2007 Ural Sportman (Kick-start only at the moment) 6900km on the clock. Last service (oil, filters, valves, carbs and new plugs) 900 km ago.

Been riding the bike a bit recently and today I was out running errands.

Went to reserve, so stopped in a petrol station to fill up.

About 10 km down the road the bike started farting and popping and bogging down. It even stalled a couple of times, but I managed to kick it into life again without too much difficulty.

My thought was crappy fuel because if felt exactly like water in the fuel.
The only surprise was that the fuel came from a decent fuel company.


Later I was out again and it bogged down badly, stalling by the side of the road. This time no joy: ended up having to pay to get towed home!!!


Whilst waiting for the tow truck I checked a few bits: HT leads seemed OK, I drained some fuel from the float bowls, I unscrewed a spark plug to look at it. I connected it to the HT cap, earthed it on the cylinder and kicked the bike over: no visible spark.

Once home, I got the timing light out, rigged it up, kicked the bike over, no flashing light, so seemingly no spark. This is the Ducati ignition system.

Not happy....


So, any suggestions?
 

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My mate has a Ural,it's a 750,not sure of the year.His broke down with something similar.It turned out to be the top hat shaped rotor that tells the electronic ignition when to fire.This had come apart so the timing disc bit had fallen off.A one piece rotor from MPC or F2 motorcycles,I can't remember which,cured it.Worth a look anyway.
 

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Discussion Starter #3
My mate has a Ural,it's a 750,not sure of the year.His broke down with something similar.It turned out to be the top hat shaped rotor that tells the electronic ignition when to fire.This had come apart so the timing disc bit had fallen off.A one piece rotor from MPC or F2 motorcycles,I can't remember which,cured it.Worth a look anyway.
That would explain it!!

I'll try and whip the timing cover off this weekend and have a look. I hope it is self evident how to put it back on!

Any other suggestions welcome too.
 

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No idea, but don't you hate it when things conform to stereotypes? That sounds like it could be a serious PITA to fix, and with no electric start either! :(

Good luck. :thumbup:
 

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Discussion Starter #5
No idea, but don't you hate it when things conform to stereotypes? That sounds like it could be a serious PITA to fix, and with no electric start either! :(

Good luck. :thumbup:

So far the bike has been dead reliable: started everytime.

It's low compression and relatively new so kick-starting is actually quite easy. How ironic if I have to get the starter motor fixed in order to sort this.

It may still be crappy fuel, but I doubt it more and more, especially with the lack of spark.
 

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The fuel does sound like a red herring. I wonder (not having a technical head) if the fuel was really crap whether running on it might have buggered the HT system somehow...
 

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the only time the fuel and electric system come together on a carbed bike is at the spark plug, so i dont see how one can screw up the other? if no spark then thats where i would look. does your ural have a coil and do you have the figures for checking it? had that fail a couple of times.
to check the fuel on a bike with electric start i would turn it over for a few seconds and see if the spark plug had fuel on it, but thats a lot of kicking, good luck with that!
 

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Discussion Starter #8
does your ural have a coil and do you have the figures for checking it?

Being a relatively recent model it has enjoyed the latest improvements from the Irbit factory. One was the "ultra-reliable" ducati ignition system. No idea how to check it. I will nose around to see if I can see any crappy earth connections, but otherwise I need to wait to info from my Ural forum....

Just in time for spring...:rolleyes:

On the bright side my TA is ready to go, even if I had to put the old tyres back on for this week...
 

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If all else fails it may be worth giving David a call at F2 motorcycles for advice, very helpful and knowledgeable chap, I have always dealt with him with my Dnepr.
 

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Having read through the posts here, this is the bit that stood out...

This is the Ducati ignition system
Time to break out the multimeter and check through the ignition system eliminating suspects one by one. If you can get a wiring diagram and specs for the coil, pickups etc then that'll make life a load easier. There are good reports about replacing the Ducati system with a Power Arc optically triggered system but it's not cheap.
 

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Discussion Starter #11
I'm ashamed to say I'd forgotten about this thread. I was none the wiser, fed up and just left the Ural as is for a month, enjoying riding the two-wheel TA instead (acceleration... so that's what it feels like!).

Finally, I found a mechanic that would do house calls and he came over. 2 hours later the culprit was isolated: the hall sensor micro-switch on the ignition pickup. It had conked out. He told me that I could spend £40 with Ural and buy one there, or buy the same unit from a Volga car shop for £5.50. Funnily, I opted for the latter and the bike has since been running fine.

I have read about the power arc units and, yes, they do seem interesting. I'm keeping my eye on the exchange rates and when the dollar drops a bit more, I will buy the high level Ural exhaust and possibly the power arc system from a specialist in the US.
 
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