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Author Topic: Duc won't run on one cylinder  (Read 1425 times)

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Offline KB02

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Duc won't run on one cylinder
« on: April 15, 2010, 04:13:39 PM »
SO it is finally spring here in Vermont and I have been able to get my duc out and ride a bit. Still a bit cold, but I'm riding non the less. Today I went to start the bike to ride to work and the front cylinder won't fire.

2000 Monster 750. I checked the plug and the plug itself is fine. Fires nice and bright when plugged into the other wire. I actually happen to have a spare coil that I plugged in and that did not fix it either. I got the coil a few years ago when I had a similar problem and the issued turned out to be something else (that for the life of me I can't remember what).

What should I look for? Spring is here and I want to ride.
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1978 CB750K Project
2000 Ducati ST2
...and a pedal bike

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Offline mlinder

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Re: Duc won't run on one cylinder
« Reply #1 on: April 15, 2010, 04:23:59 PM »
Fuel
Air
Spark

You have fuel.

Check fuel and air.
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No.

Kurlon

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Re: Duc won't run on one cylinder
« Reply #2 on: April 15, 2010, 06:58:04 PM »
Swap the ignitors / cdi boxes and see if the problem follows them or not.  If it does, if it does, you need a new CDI, if it doesn't... chase the wiring and suspect the pickups.
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Offline KB02

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Re: Duc won't run on one cylinder
« Reply #3 on: April 16, 2010, 04:32:00 AM »
PICKUPS!!!!

That's what went wring before. What are they? How do I find them?
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1978 CB750K Project
2000 Ducati ST2
...and a pedal bike

Join the AMA today!!

My project thread Part I: K8 Project "Parts Bike"
My project thread Part II: Finishing (yeah, right) touches on Project "Parts Bike"

Kurlon

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Re: Duc won't run on one cylinder
« Reply #4 on: April 16, 2010, 05:20:20 AM »
http://issuu.com/ducatiomaha/docs/m750_usa-00

Page 28/29, drawing 12

The pickups are triggered by a bump on the flywheel.
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Offline KB02

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Re: Duc won't run on one cylinder
« Reply #5 on: April 18, 2010, 06:00:57 AM »
Thanks for that site!!! I've been looking for a fiche site for my duc forever.


It has been confirmed, it is the pickup coil for the horizontal cylinder. This is good a bad news. The good news is that I now know what's wrong. The bad news is that I think they run about $200. Any suggestions of where to find one online? Or do I have to go to a dealer for that?
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1978 CB750K Project
2000 Ducati ST2
...and a pedal bike

Join the AMA today!!

My project thread Part I: K8 Project "Parts Bike"
My project thread Part II: Finishing (yeah, right) touches on Project "Parts Bike"

Kurlon

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Re: Duc won't run on one cylinder
« Reply #6 on: April 18, 2010, 06:24:32 AM »
There is a used one on ebay for $150, but if you can get a new unit for $200 I wouldn't bother.

Woundedduc.net might have something, email them and ask.

http://www.ducati-kaemna.de/cms_en/katalog.htm?&view=artikel&artikel=2589 ?
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Offline BlindJoe

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Re: Duc won't run on one cylinder
« Reply #7 on: April 18, 2010, 01:22:07 PM »
why would you want it to run on one cylinder  :P
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