Yesterday started the bike up at work and it was badly missing on one cylinder, run to work in the morning was uneventful with no indications of an impending problem. After a mile or two the spluttering and exhaust popping stopped, EOBD light came on and the engine was fully shut down on one cylinder. Judging by the smell the popping was unburnt fuel in the exhaust, but after the eobd came on the exhaust smell was entirely burnt fuel (no unburnt petrol) I assume the ecu stopped injecting on the dodgy cylinder on receipt of the fault code. Got the bike home ok on just the 1 cylinder, in fact it ran remarkably well as a 449 although it sounded a bit odd. For anyone who has experienced similar with EFI 10.1 as the fault code, what did you discover was the precise reason for the malfunction? Just wondered what to look for (apart from water in the connector) when I start digging around. Dry yesterday but I did get caught in a thunderstorm a few weeks back and the bike was washed the following day, otherwise only used on dry days for three weeks before a week in a dry garage (whilst I was using the 748).
10.1 horizontal coil Could be water ingress. Remove horizontal coil and blast with air line. Check wires for chafing to horizontal coil. Swap coils to see if fault code changes to 11.1. (Faulty coil) New coil/injector/pump relay Worst case, failure of coil driver in ECU
Thanks Chris, just the sort of info needed, coil is now out and it is wet with water dripping from inside. It is now in the oven at 100c for 10mins to dry it out. Connector clean and dry with no corrosion. Would take the plug out but neither the Ducati plug spanner from the 999 tool bag nor any of my normal ones seem to fit. Is this the Iridium plug 'effect'?
Good chance it's water ingress. A smear of silicone grease on the coil seal helps things. This coil is exposed to road water thrown up by the tyre.
Sounds like you need a thin wall socket. It's not iridium only though, happens on standard types too.
Coils dried and resistance between pins 1 and 15 measured at 0.32 ohms, spec is 0.6 to 0.7 - New coil required.
Cream, already got one ordered after reading your post on a recent thread - if I need to get the grinder out it helps to have most of the work done already.
I had water ingress in the vertical cylinder coil in France after washing it after a thunderstorm the next day ran great for 200 mile then the spluttering and exhaust popping started, intermittently for next 60 mile. Ran great the next day all 300 mile then the day after was a little Warmer and it started running on one cylinder luckily about 15 mile from the camp site. Seat and tank off after a quick call to Nelly(cornerspeed) slight (very slight ) moisture on coil dried it out and all good. From my experience it can be intermittent and can depend on when the moisture on the coil is by vaporised causing the miss firing.
Denzil Are you aware that you can remove the coil's tip? Worth doing as you could have some water trapped inside. Watch out as you pull the tip off as there is a tiny spring inside which inevitabley throws itself into an inaccessable place and hides. If you can't remove the spark plug, I found a coffee stirring stick purloined from a bikers cafe serves as an excellent 'drying out around the plug tool' with a small piece of rag wrapped around the end of the stick you can push it into the plug recess to dry around the plug.
Crystaljohn, I wasn't and have now taken the tip, spring and seal off and put it back in the oven, this time for 30 mins at 100c. After the first cook it made no difference except I was able to check its resistance at running temperature. I think this one is a goner as the resistance is way out of spec even when it is hot, ecu will probably see it as out of range hence the fault code showing a short. Craig at Moto Rapido will be my first call of the day tomorrow morning CR that's the one, any idea what the difference between part nos 38040081A and 38040082A is?
Denzil It would be an interesting experiment to see the change in the coils resistance after cooling in the fridge.
SKU 38040081A is no longer available from Ducati. It has been superseded (replaced) by SKU 38040082A. Enter this new SKU into the search to purchase the item. Replaced by SKU 38040082A: 38040081A
The part number difference is probably only Ducati's stores identifying vertical and horizontal coils. I can't see there would be any difference in the actual part
Later ones have a different part number and a flying lead ( looking at the pictures), probably not compatible plugs between the old and new versions??
It will depend on whose turn it is to work this Saturday. I know Craig should have been off last week so he is likely to be off today (Thursday) so it might be Luke you speak to. Andy
