Help with a dead Transalp

[Flipfly]

Mrs Flips 650 Transalp died yesterday

RAC man came out and checked the power to the rear coil (couldn't easily get to the front one. Power is there and the ignition signal pulses as it should do. But there is no power to the spark plug.

Now obviously this points to the failure of the coil. However, both coils must be defunct (otherwise it would run on one cylinder). Is this a likely occurance? Could something else have caused both coils to fail at the same time?

Come on bike fixing guru's, give me ya thoughts

 

[Shep]

All I know is that the coils are dodgy, a friend of mine had a fair few fail on him over a few years.

Both coils at once though??? sounds unlikely. Can you borrow an ignition unit/ecu?

Shep

 

[Flipfly]

All I know is that the coils are dodgy, a friend of mine had a fair few fail on him over a few years.

Both coils at once though??? sounds unlikely. Can you borrow an ignition unit/ecu?

Shep

I don't know anyone else with a 650 matey.

Trouble is, the feckin thing has 2 CDI's too One for the front bank, one for the rear. The rear coil is receiving the signal/power, so unlikely to be the CDI and more likely the coil, but as you say both at once

What was wrong with points or one of those centrifugal valves like they had on steam engines

 

[Tonibe63]

You need to confirm that both plugs are not sparking by taking them out and turning the engine over whilst earthing the plugs out on the engine casing (apologies if I'm telling mi gran how to suck eggs).
I can't see how two coils would fail at exactly the same time unless they are linked electrically in some way. If both plugs fail to spark then it is this electrical link between the two coils you need to locate and test.
I've bought two non running bikes (a CCM and a Husky) in the past that dealers had diagnosed as ECU failure. Both bikes turned out to have a bad connection within the looms and cost nothing but a bit of time and solder to fix.

 

[Flipfly]

Checked it tonight and both coils are working

Bike started, ran it until it was hot enough for the fans to cut in and it was fine. Starting to think it may be crap in the fuel filter gauze or in the carbs. Bike has had very little use and only started cutting out after Mrs Flips first little off. I think she may have dislodged something in the tank or carbs

 

[Uinneag]

H.I.S.S.

Only a guess sorry not much help

 

[Flipfly]

Nah, Hiss is fine.

I suspect the RAC mans spark tested was knackered. Hiss cuts in pre coil and the power to the coil was fine.