Question about 2003 Ducati 999 R Fila

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999 Starting problem, deducing step by step

Chronic starting problem!! I've been living with and troubleshooting this since I got the bike in January. Symptom: Eventually it always starts, it just takes FOREVER. It cranks. And cranks. Just won't fire. Doesn't matter if it's hot or cold. And Hi-idle lever position doesn't matter either. Occasional backfire during starting attempts. Occasional (what sounds like) knock during starting attempts. But when it finally does start, it runs like a champ, aside from the occasional stall. Preliminaries: - Load tested the battery, it's fine. Plus it's on the charger 100% of the time while garaged. - Fuel OK. Even opened airbox and visually witnessed fuel being sprayed. Even opened fuel cap to vent "just in case." - Air OK. Airbox was open during testing. - Spark: YET TO BE TESTED. Though since it actually runs, I doubt if this is really the culprit. However, I will test it anyway before the weekend. Assuming I rule out spark, what else could be the problem? I am ordering the VDSTS, as well as doing the legwork prep to do a valve job. While I have the bike in pieces for the valve job, is there anything else anyone could suggest I check which may be causing the starting problem?

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Next time this happens, take out 1 spark plug and inject a little gas, replace the plug. (You can do both f you want but 1 is enough) If the bike fires up it is prob not getting gas for some reason…

Posted on Nov 20, 2008


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1 Answer

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