Hi everyone

My back cylinder has gone quiet.

There's plenty of compression and spark, so am thinking there may be some kind of timing (crank angle sensor) or fuel issue.

My workshop manual talks about a diagnostic tool; blinking light variety, plugs in at the engine management unit, to check the condition of sensors. Does anyone know where I can source one, or how to make one up? Goofgling hasn't helped so far. I'm guessing the plug/cable is an industry standard type. Any advice would be much appreciated.

Thanks
Mike

Can't help you with the diagnostic but I think if the crank or timing sensor has failed it will affect the spark and injection to both cylinders.

seems to me I saw a diagram on one of the other Ducati forums on how to craft your own version, do a google search and you should be able to find it

There is a schematic on how to build one on here too. It works too! Takes about $10 of parts and about 20 minutes to solder up.

Cheers.

Nick.

Try this post:

viewtopic.php?f=3&t=2558&hilit=flashing+light

Cheers.

Nick.

chances are this tool is not going to help much, time to start check those connectors and grounds
concentrate on the ignition circuits and key switch

Thanks for the responses guys.

Haven't looked at the bike for a week or two now, although I did quickly run a compression test on the rear cylinder; 125psi. So that's doesn't seem likely to be the problem.

As I mentioned in my op, there is a big fat spark at the rear cylinder, so I'm discounting CDI/ignition circuit issues at the moment and am starting think about fuel. Bike is just sittng in the corner of the garage atm, with a sheet over it.