Question about Ducati ST 2 Motorcycles
Hi, Anonymous and the usual suspects are:
1. Fouled spark plugs.
2. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Loose connection at ignition coil or plug between ignition sensor and module.
4. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
5. Faulty ignition coil or ignition / electronic module
6. Failed CKP, CMP, or BAS sensor.
7. Faulty ignition switch.
8. Security alarm failing to disarm needs reset
For more information about your issue and valuable free downloads that you will need please visit the websites below. Good luck and have a nice day.
98 St2 No start Ducati ms The Ultimate Ducati Forum
ducatipaso org View topic No spark
Free Ducati Motorcycle Service Manuals for download
Posted on Feb 14, 2016
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Posted on Jan 02, 2017
SOURCE: engine wont fire up
Do you have fresh gas in the bike? Try changing the plugs with new ones and check for spark. You can do this by putting the new plugs on the plug wire and grounding it to the head on the engine crank the motor over you should see a bright blue spark. Check one plug at a time. No spark check the ignition wires and coils. As for the oily plugs it could be they are just fouled caused by either flooding the motor while trying to start, bad plugs, week coils, bad gas, poorly adjusted carb's. I would start with the plugs and work my way back to the carbs. Still fouling the plugs after all that start checking the engine, ie compression check ect.
Posted on Dec 15, 2008
SOURCE: timeing a yamaha 175 enduro
Without the year of the bike I am hampered. Lets assume it is an older bike and has a set of ignition points and not a CDI model.
Pull the cover off the shifter side of the engine. Remove the spark plug then turn the flywheel so you can see the points. Oil on them? Dirt, or rust? Next check the main bearing. Do not rotate the flywheel but instead hold the flywheel firmly and lift it up and down, left and right. Was there any movement or was the flywheel rock solid?
I am willing to bet that the points were dirty and there was a lot of play in the crank bearings. If so, you will need new crank bearings and seals plus new points and condenser. The engine needs to tear down into about 75 parts in order to replace the bearings. The job requires some special tools to remove the flywheel and clutch, plus a crankcase separator the split the gearbox.
This is not a job for the beginner. I suggest you have the shop do the work and also that you spring for 3 more bearings and seals plus a fresh cylinder bore, new piston and rings and a new spark plug. You now have a brand new engine that should run well and last for many years. Please rate this solution. Thanks
Posted on Mar 18, 2009
Park the bike out of bright sunlight. Take one plug out and hold it (with the ignition lead attached) against the side of the engine. Crank the engine and look for a strong blue spark. Repeat with each plug. If you don't see a strong spark, you need to clean, replace and or/regap that plug. If that doesn't fix the problem, have your coils checked.
Posted on Jul 08, 2009
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